Call around to local breweries/distributors and ask what they do with kegs that do not pass quality checks. If you are making a keggle, you don't need to worry about holding pressure... you are going to poke all sorts of holes in it.
I like the zero part. In Clemson we use to have a $10 deposit on keg shells. So I'm going to make a few phone calls and try to get a free shell, if not I'll call the old fraternity and get them to put a couple of shells aside.