One guild I belonged to had a similar requirement. But we had to have so many HOURS spent on charity quilts. So each month, the roster would go around, and we'd write how many service hours we had done at home.
Another guild I belong to has us make blocks for charity quilts at home, and donate them to the guild. Then someone takes them home and turns them into a quilt top. And someone else takes them home and quilts them. Then they are donated to CAPSA, QOV Little Lambs, etc.