I will list here other Swap Groups as I come across them ;-)
Block Lotto is run by Sophie and is open to all quilters at any level of experience. No commitment is required: make blocks and enter them when you want; sit on the sidelines and read along when a block doesn’t really interest you or you don’t have time.
On the first of each month, the new block and guidelines are published. Participants make blocks and post photos of them. Each block made becomes a chance to win a set of blocks at the end of the month.