Incubator

[Dracoluna]

Honestly, I've been breeding corns for about 10 years and never used an incubator. Either they go up on a higher shelf, over my display tanks (which have heat lamps), or this year, I cheated and put the box on my hatchling rack. The heat strip at the back of the box keeps it between 78 and 80 degrees constantly. Works great and means I don't have to mess with an incubator. If you really want to do something separate, get some heat tape, a cheap thermostat (hydrofarms will work for corn eggs), and an incubated box. Old fridges, large coolers, etc. work great. In the process of getting an old dorm fridge set up for ball python eggs as we speak.

I'm pretty sure corns could survive the apocalypse so don't stress too much. Whatever you do, use an accurite type thermometer so you can see the max and min temps. Sometimes something as simple as running a ceiling fan can lower temps a degree or two.