the Solar Death Ray
 

The sun is bright. Don’t look at the sun or you will damage your
eyes. Anything that focuses the sun will only make it more
dangerous. The Solar Death Ray is dangerous. Don’t build one.
I’m surprised I haven’t burnt or blinded myself yet. The fumes
from molten plastic can’t be good either. Don't play with fire.

http://www.solardeathray.com

hehe, wonderful idea =-)