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oobject: 'daily user-ranked gadget lists'
What are the essential gadgets to carry around every day? The first in a series where various people describe their current or ideal stash. Today its Oobject's turn. Vote to rank our choices.

Oobjects perfect gadget bag

Climbing walls are both functionally and aesthetically fascinating. They often have beautiful abstract shapes reminiscent of Kurt Schwitters Merzbau or are just plain intricate and impressive.Included in our collection here are interactive musical climbing walls, enormous artificial ice towers, surreal climbing forms and a huge climbing wall inside a disused Texan grain silo. Vote for your faves.

Great Climbing Walls

This year is special, in theory it is the first year since 1982 that keytars have not been mass produced as musical instruments, and that would have been something to celebrate if Guitar Hero and Rock Band hadn't brought them back, with a vengeance in the form of game guitars.This list is a warning reminder of what people really look like when they play Rock Band. It features keytars from their earnest debut to parody, to some kind of post-post-modern resolution with self aware but not-really-joking keytarists like Ben Folds.After the Moog Liberation was introduced in 1980, a variety of performers from Thomas Dolby to Jan Hammer made keytars a staple of 80s music, with Devo being the first to seize the ironic potential. Later weird Croation keytarist Belinda Benekovic became an internet meme and more recently Flight of the Conchords took a jab at a Roland Axis player.Her are some videos of keytars in action from classic 80s synths to circuit bent toys. Vote for your worst.

worst keytar (videos)

One of the benefits of the tradition of wooden buildings in the US is that they have fairly good tensile strength, so you can pick them up and move them elsewhere without them falling apart. This makes for some fairly surreal imagery, particularly in time lapse, since homes are all about static permanency. And we've included one daring masonry building move in the list, just to prove it can be done.

8 moving houses videos

Really complicated, and really expensive swiss watches are called grand complications based upon strict criteria.These are often based upon the gravity compensating tourbillon mechanism that isn't strictly needed for a wristwatch but is insanely complicated so people build them to show off their skills as watchmakers.This is the kind of gadget that gazillionaires with enough taste to avoid diamond encrusted ones buy when they fly into Geneva. They look very James Bond - except that they cost ten times as much as his humble Rolex or Omega, often costing more than $100,000 each.

8 most complex watches

Tube testers are machines to test the notoriously unreliable predecessor of the transistor - the vacuum tube, or valve. If you are a hi-fi nut with a tube amp you might actually even need one of these.What makes them special as vintage gadgets is that they have that particular density of retro buttons and switches that spells complicated and releases Serotonin in male humans.The link to the Catalog for the ‘Supreme' brand on Steven Johnson's site is particularly fine. Tube testers can be picked up on Ebay, fairly often, for reasonable prices.

13 tube testers

Singapore Airlines has this week banished the mile high club, with the introduction of on board double beds. The rest of the interior, however is fairly bland. Here is a list of some of the best aircraft interiors.

16 cool aircraft interiors

Bat houses are like slimline bird houses on stilts. It seems that bats will slither into folder sized slots, and a phone box sized house will carry tens of thousands of bats. Something to think of, if you want to annoy your neighbors. Along with the houses are some artificial bat caves, built by bat men and bat women, such as the Dorset Bat Group.

16 bat houses and bat caves

The launching of a ship after smashing a bottle of champagne against its bow is an iconic ritual. It is also one of the few things in life which is still impressive despite being relatively slow. Shown here are videos which are interesting because of the ships fame, sheer size or quirkiness of the launch, including those where huge waves drench onlookers. Our favorite is the time lapse submarine launch in a floating dock.

12 videos of ships being launched

The ability to print incredibly complex custom objects on demand through the use of computer-aided rapid prototyping techniques will transform product design.Here are some of the most amazing current examples of digital fabrication through techniques such as stereolithography, selective laser sintering, 3D printing and fused deposition modeling. Vote for your favorite.

20 3d printed products

It is no accident that very few production gull-wing door cars have ever been built. It is a design gimmick that looks superficially interesting but is highly impractical. Most gull wing cars are concept designs, and the company that made the most famous of all, the De Lorean DMC 12, went bankrupt. The Mercedes 300 SL is a lone example of a wonderful looking gull wing car, but even that was deemed dangerous, and nicknamed 'the widowmaker'.The gull wing's marginally less impractical sister, the scissor door, has actually become a signature feature for Lamborghini. How fitting that a symbol of bad design should represent a, once great, car producer that has reduced itself to churning out expensive kitsch, since the mid 80s.Somewhere in between a scissor and a gull wing are the doors on the cheaper Toyota Sera, which is a car that looks like someone's grandmother trying to be cool.Vote for your very worst.

bad design gull wing cars

Today, prosthetics are a world apart from these pre-digital age examples, using advanced robotic and cybernetic technologies and tools such as 3-d printers for mass customization. As such vintage prosthetics often have the particularly strange look which is both creepy and fascinating and accompanies technological obsolescence.Early prosthetic limbs date from ancient Egypt and Rome, however examples from the middle ages appear more regularly, being made of armor. The were later replaced by non articulated wooden prosthetics, of the caricature style normally worn by pirates. The tragically large number of amputees in the Napoleonic Wars led to the development of the 'Clapper', named after the sound made by its articulated toes which were controlled by artificial tendons. This prosthetic became the model for the 'American Leg' which was developed during the American Civil war. Wooden prosthetics were heavy and were not improved on till the development of lightweight alloys, during the first World War.

15 vintage prosthetic limbs

Atomic clocks are accurate to within one second since the period in time when humans and apes diverged. These clocks are literally what makes modern civilization tick, but few people ever see one. Their accuracy is necessary to overcome potential errors caused by relativistic effects in GPS satellites, for example. Here is a gallery of some of the more interesting atomic clocks. Vote for your faves.

12 amazing atomic clocks

Giant centrifuges are used to test whether fighter pilots or astronauts can deal with extreme G forces, pilots having 3 chances to survive a 15 second 6G test to be able to qualify. Here are some videos of the results of the effects of these tests up to 10G and on a range of suspects from pilots to Iron Maiden's lead singer.

12 centrifuge gforce test videos

Thanks to an intrepid group of urban explorers, some of the most magnificent hidden engineering triumphs that lie, hidden, beneath the streets of the worlds cities are being recorded and posted on underground (no pun intended) websites.Here are some of our favorite sewers and drains, from Paris tourist attraction sewers to Londons Escher-like, arched, Victorian Gothic drains, to still working ancient Roman systems and the infamous giant storm drains beneath Tokyo. Vote for your faves.

Spectacular Sewers

The Segway took the idea of the two wheeled vehicle and made it require thousands of dollars of electronics to remain as stable as an ordinary two wheeled bicycle. The Apple Newton was a personal organizer that required a personal assistant to carry it around for you.The common thread in the choices here is people mistaking sophisticated engineering for sophisticated design. Many were and still are technical triumphs.The Space Shuttle, for example, still bathes in the reflected glory of the Apollo missions, yet its design was largely a mistake based upon the PR potential of a plane-like craft, rather than practicality. Its replacement will look much more like a Saturn 5 rocket and it forms part of the hardware for what Nasa refer to internally as the ‘crude missions'.Below is our chart of the biggest all time tech. failures. Vote for the biggest loser or suggest some alternatives in the comments.

10 biggest tech product failures

Pocket sundials can be over 1000 years old, arguably making them the world's first watches - and with no moving parts to break. Typically they were carried by shepherds, where there are a variety of designs, from the French Pillar Sundial to the Tibetan Time Stick.

12 Pocket Sundials

Aside from the fact that vintage massage devices look less like smooth sensual objects than giant, terrifying dental machinery they are possibly the worlds best source of laugh-out-loud, euphemistic advertising copy.Here are a range of our favorite Frankenstein devices with some classic product names, such as the Handy Hannah Vitalator; Niagara Cycloid-Action Cyclo-Massage; Stim-U-Lax Junior; Bonger Body Massager, Magic Fingers Motel Bed Massager or our personal favorite the Chic [sic] Glorifier.

18 Vintage Massage Gadgets

The lack of design innovation in an economic environment which excluded innovators meant that Soviet Russian technology often lifted concepts directly from the West. Not just little things like microprocessors and computers, but massive projects like Superfortress bombers, the Concorde and even the Space Shuttle.

Top 10 Soviet Technology Ripoffs

Diving helmets are beautiful objects. Here are our favorites from modern versions with amazing visors for undersea welding, to incredible Steampunk style ones that look more other worldly than something from Jules Verne.

18 diving helmets

Until very recently, people still used the same principal that Newton had proposed, to derive latitude from the angle of the sun or stars at known times. The sextant (or originally octant) allowed people to do this relative to the horizon, rather than the instrument itself.Later versions of the sextant included a very simple version for emergency use, called the Bris sextant (not a great name for a device to be used on a rolling ship) and until the advent of GPS systems, bubble sextants were used on aircraft.

16 sextants

Before electricity, lighthouses relied on lamps that would almost be considered mood lighting by today's standards. Mechanisms were clockwork and had to be wound as often as every two hours. In the 19th century, Fresnel designed a lens that could focus this light into parallel rays and project it horizontally, dramatically improving lighthouses. By the end of the century, all lighthouses had Fresnel lenses classified into orders, with first order being the largest and most impressive.These days lighthouses use less elaborate lamps such as the beacons found at airfields, or even powerful, but unremarkable to look at, LEDs. Here is a list of some of the most beautiful and important lights ever made, including some 1st order beauties that stand 20 feet tall, and were floated on a mercury bed. There are no descriptions of each item, for this chart, as the images speak for themselves, however, the sites linked to have information about the lighthouses where they came from.

15 beautiful lighthouse lights

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Category: 'robotics and cyborg'

Robots often look insect like, largely because of their jerky movements and exo-skeletal look, both of which are a result of them often being works in progress at the individual and overall state of the art. Making them climb walls and hang effortlessly off a ceiling just adds them looking particularly bug like.There are a variety of movements and gripping mechanisms, from electromagnetic to air suction, however our favorite is the friction based tree climber.

The fetish aspect of external, insect-like skeletons has made them a staple of science fiction. However, the utility is real, from the incredible Japanese Enryu rescue exoskeleton, which looks like a loader from the Aliens movie, to brain controlled limb enhancers for the para or quadraplegic.

Fingerprint scanners are a dime a dozen these days. But how about devices which can literally grant access by the way you walk, the way you talk, the way you type or write, bite or grip. Here is a chart of state of the art biometric applications, including futuristic devices like portable Game Boys which are ominously called HIIDE (handheld interagency identity detection).