Built a fermentation chamber out of a garbage can, 32 gallon brute can. Right now for this time of year all i need is a little bit of heating so, i did this, it would also be really easy to insulate with a blanket over the top. I have a heater stick for a gun safe as a heat source, works just fine and is only like 8 watts. plus the garbage can was easy to use. And no the garrbage can was one i had never used for garbage.