Hey Jess! I've got an old mini fridge (still works, though) and we live right down the road from a place which has a dozen shot ones outside at any given time, not to mention the plethora of yard sales around here. I've got probably 30+ feet of mixed heat tape laying around and a few spare herpstats. I might give it a shot on my next day off. See how stable I can get. I am just paranoid. I KNOW there has to be a better way.
I like plug and play. It isn't so much laziness, but we work a lot of hours, so its nice to have the comfort of knowing its going to be the same temp when we get home from work. Today I ran to Wal-Mart and to pick up my wife from work. Gone maybe an hour. Temps were 83.1 in our Hova-Bator when I left. When we returned it was 80.6 degrees. Unacceptable!