Quote Originally Posted by LarryS View Post
I use these, and have been very happy with them.

http://www.petmountain.com/show_product/509769
That doesn't have a hygrometer in it though...

I use the Acurite that Derek showed, but I get mine at Lowe's for 12 dollars each. Sometimes they have to order them in, so if you don't see one on the shelf, just ask them!