Prototypes of really small projectors built into cellphones have been in development for around 2 years and production versions are imminent. A projector is due to be built into the Blackberry Curve, an event which may bring the downfall of civilization as a million, dreary, artless, Powerpoint presentations escape the confines of meeting rooms.Rather than getting excited about matchbox sized Pico Projectors in cellphones, with dim displays, the larger, pocket-sized, Nano Projectors look more practical and interesting. These offer the possibility of some very interesting art installations, at the very least, and the potential to change indoor advertising and retail environments, entirely.This roundup includes component technology suppliers and product manufacturers and package design prototypes and concepts.