Here's my version of the mini fridge chamber that I have seen a few times on here. A $40 craigslist fridge, some lumber, insulation, and aluminum tape. I have my first pale ale in there now and it's holding steady at 68. i'm using the Inkbird dual controller, but don't need the heating side currently. If I do need heat this winter, I made a little heater out of a paint can and light bulb that I will use. I'm hoping it will get and hold cold enough to Lager but we shall see!