Our group used to quilt for charity, and we just put the group name and year, using our machines, on each one. Now that I'm not with the group, I use my machine to write - "A carefree quilt by Joy- 2015" at the bottom of the quilt. Then we know its an original, but the details are private. My donation quilts are my practice quilts - practicing a new block, or new quilting pattern, or both, and often scrappy. I try to relax and just try things out - hence the "carefree quilt" label.