I got Hobbes his new 2 gallon tank set up about two weeks ago. Here are some pictures. You can see him a little better in the second one.
[The filtering doesn't look too good because I had forgotten to put one of those stones at the bottom. I had two of them but because i bought everything used I had no instructions. I figured it out when I changed the water though

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I'm thinking of getting him a heater ASAP because he's in the basement and it gets pretty cold at night. I'm just not sure what kind of heater I would need for such a small tank. I also don't have much money. Any suggestions?
Thanks for your help