We could trade each other or buy/sell individually. OR we could post what we're selling/swapping ahead of time and just complete the transactions all at once. Then sit down for dinner... It'd have to be a VERY firearms friendly restaurant so we can bring the guns in. It would be more of a true swap/meet than a private mini-gunshow with tables and dealers.
I like the sound of that. We could have a thread ahead of time where everyone takes a few pictures of their items laid out and then interested parties can contact that person ahead of time to arrange a trade or sale. I'm sure a lot of us have accumulated miscellaneous parts over the years that really aren't worth listing separately but being able to trade them off at a group meet would be great.