I ended up purchasing a Sunbeam Single Solid Burner
for $20 and so far its regulating well. My brew went from 60 degrees to 78 in no time. I find the halfway setting from 0 to Low makes for a good 76-78 constant inside my kitchen cupboard.
I was looking at the reptile warmers and don't think that's a good solution, being that they adhere to the bottom of a glass tank that's usually already raised off the surface. Plus once you adhere them, they are *stuck* to that surface.
The next step is to splice in a temperature regulator that would toggle between off and on depending on the temp of the brew and a target temp...