Today my father in law came into posession of a 5 gallon tank with a complete set up. Tank, filter, hood, light. I thought it would be perfect for my son's room. He told me he's only got $2 into it seeing as how that's how much he paid for it at a yard sale and gave it to us. I was just looking for some ideas as to what to put in this thing. My son like the puffers but when I told him that it was all he could put in it he seemed a little dissappointed. Any other ideas as to what he might like. Keep in mind we already have 2 community tanks and I would like something different.