Any good ideas what to do with old propane bottle?

pitch wrote:
Never heard of an emotional attachment to a propane tank before! If the only problem is not wanting to pay the 5 dollars, just set it out by the road, some scrapper will pick it up in a few days. You're rid of it and helped someone besides.

Although good intentioned, I don't think that's something I'd like to try. The OP states in his first post that there are "neighborhood kids" around. The potential for misuse of the cylinder would keep me from putting it out on the curb.