Best to convert a mini dorm fridge or cooler into incubator. Unless you plan on breeding enough to make buying 300$+ incubators worth it id build custom one.
I got a Upright Freezer free off craigslist, added 11ft of 11" flexwatt, herpstat, 4 80mm fans 15 2 liter bottles for water. This will hold 28 6qt tubs with temps of 88.1-89.5.
Started with this.
Flexwatt Installed
Fans Ran and powered by a Computer 300w power supply Jumped with paperclip(search Google for help on this)
Or you can follow something like this
http://www.reptileradio.net/reptiler...ead.php?t=6115