Quantity   Component name
1 × FarberWare Electric Hot Plate Or any hot plate really. I like the ones with circular 'pucks.' They are self contained and durable. The one I got is 900W, plenty of heat output.
1 × SSR-40 DA A solid state relay from Sparkfun that claims a 40A rating for 120VAC. Doubtful of that, but I only really need 7.5 amps.