Thank you very very VERY much for posting this Jen. I appreciate it a lot. I have a large local fish store and a smaller local fish store then a ma and pa owned fish/reptile store by me. One of those three places has to have those kind of coolers. I have a Helix and plenty of extra flexwatt. I'll have to run to Target or Wal-Mart and scope out containers that will fit in there. I'm pretty sure HD or Lowes has those light grids and of course I have tons of water bottles. Seems pretty simple to make and that this kind of incubator works well for this sort of thing.
One question though (at the moment) did you use anything to measure your temps/humidity?