I have seen this work pretty well on some other small forums, so I would like to give it a shot here.
RULES:
1. Don't take anything you won't use.
2. If you take something, at least plan to offer something up to others.
3. Buyer pays shipping.
The idea is that lots of people have stuff laying around they don't need, but that others might.
I will start it off:
exhaust bracket and rubber mount

rubber brake hose

valve cover gaskets for spark plug holes
