DIY USB hot plate – I could actually make this

This little USB-powered hot plate looks simple enough that even a bonehead like yours truly could put one together. A couple USB wires, some bits of porcelain, and a couple pans are all you need for a functional whatever-it-is. Of course, since it needs two USB ports, you’re out of luck if you have a MacBook Air. Proven useless once again! I curse its name.