I've participated in specialty seed trains for peppers and true potato seeds in the past, and they've been fun. But I wanted to share the pictures that I took of an outgoing box of seeds after I took some and added some, and sent on to the next person just yesterday. This is a bonanza. :)
This swap was organized in the Going to Seed member-forums. At GTS we're learning to breed landraces adapted to our hyper-local gardens and farms through courses and discussion and we also share free seed! (With the hope that you'll send back more than you were sent.)