How to Turn Your Phone Into a Projector for Less Than $5.00
Photojojo has devised an awesome way to turn your phone into a mobile projector screen.
"Basically, you start by cutting a hole out of one side of the shoebox to match your magnifying glass and taping the glass on the box. Then you make an iPhone holder from a paperclip, flip the screen display on your phone (to account for how images passed through a lens get flipped), pos