At the CES 2011 we identified projectors, especially mini one as what to watch in 2011.
Blue Light Optics Pico Mini Projector's projected image is touch sensitive, providing the user with a 10.1 inch WVGA interactive surface thanks to Holographic Laser Projection and Infrared sensors. The device features bluetooth, speakers, microphone and usb connectivity.
The pocket sized gadget just gained FCC approval, which mean it is approved for marketing and will be released soon.
Mini Projectors one of Top 5 Trends