As I see the "Tadpole" under my avitar, I must post. This will be number 5.
I see a lot of good ideas here and will use this advise. I've seen in another threads for Sig items, those are the things that really catch my interest, escpecial the hand-made items. For the most part, put the things that you would like to find. You won't please every body, but if you like it, there is bound to be others that are of the same mind. As I've seen throughout the Forums, you can't go wrong for trading-up.
Myself, I'm still working on a good sig item. I liked the rocks that are painted like frogs. My son is really into frogs and would love to find one to put in his iguana tank. I also saw a hand-made leather key chain with GC.com logo. Anything that is assiciated with hiking/camping is always a plus. The two earlier post have great ideas.
Good luck and good hunting!