PTFC Patch Patrol
Thanks to the magic of the internet, I stumbled upon a bunch of soccer fans who make and trade patches based on their beloved team.
The rules are simple (kind of). Rustle up a design, show it to the group admin for approval and then try and get fellow members to pay upfront in order to fund the production of the patch.
All profits must go to charity and from what I believe are mostly community-based projects which include helping to fund soccer fields.