DIY projectors and other strange stuff!

About Those 150 Inch Projection TV Kits on Ebay... and How To Make One. [source]


Also: this projector-periscope.

More projectors:
- Build Your Own LCD Video Projector [source]
- diy projector company [source]

Cathode Ray Tube Worlds Smallest? Second Version [video]

And this guy is a genious!

How difficult could it be to build a LASER?! O_o ... For me this sounds like sci-fi:
TEA Laser Only Three Inches Long [video, video]