Big magnifying glass ovenElement like in a hot potPropane torchDry icevinegar “cooking”Thermal heat lampAlcohol lampSolar poweredSteel sheets in direct sunlightPoach in the dishwasher Category: 10 Ideas a DayBy Marc Marling Author: Marc Marling Post navigationPreviousPrevious post:Day 46: 10 ways to build your personal brand without spending money specific to brand buildingNextNext post:Day 48: 10 ideas for new podcasts and who should host them