Class project? Homemade Projector for iPhone/iPad

[Howard J Martin]

I published a site long ago about how to make a stylus for the iPad.   I just saw this project that I'd really like to see students (or teacher) make this.  It looks like they are just using a shoebox and a magnifying lens to project onto the wall.  Cool concept at least!   

http://content.photojojo.com/diy/turn-your-phone-into-a-photo-projector-for-1/  

hm