I have always wanted my own solar death ray…but you know that might be a bit dangerous. Instead maybe I will pick up this solar furnace.

This 12″ diameter, parabolic dish lets you safely and easily demonstrate the extraordinary power of the sun by concentrating solar energy. — — Using its reflective mirror, the furnace can generate extreme temperatures to heat materials placed in the attached copper receptacle. Excellent for grades 3-12(via)

Remember if you fashion a bunch of these things into a giant solar earth melting space laser, I was always nice to you.