Everything I have read so far says they aren't worth beans I have been looking at the DIY incubators but gees they are so BIG. I am going to have ONE clutch of eggs IF I am lucky. I really don't want a HUGE thing in my already small room. I got a SMALL cooler about 5gallons and thought that would work but the more I read all I see are HUGE ones. Freezers, 120q coolers. I couldn't fit something like that in my room

What is the smallest incubator I could make that would fit one clutch of eggs?