I found this on someone's blog and had to do a bit of blog chasing to find the tail end to join up. I like this idea...kinda like a good deed, craft-style.
"I will send a handmade gift to the first 3 people who leave a comment on my blog requesting to join this PIF exchange. I don’t know what that gift will be yet and you may not receive it tomorrow or next week, but you will receive it within 365 days, that is my promise! The only thing you have to do in return is pay it forward by making the same promise on your blog."