OK, I've searched all over at the usual suspect stores (Wal-Mart, Dollar Store, etc.), and I cannot find water wigglers. They are on eBay and at Amazon, but the shipping cost makes them a lot more costly than they should be. Any ideas?
I just stole my nephews silly putty. It already comes in an egg. one small hole for the temp probe and into the bator it goes! Just stick the probe int the actual silly putty.
the only pic i have is this one you can see the silly putty egg at the far right side of the shot.