1. Use your computer printer to print your own design on special water-transfer paper.
2. Cut the design out, wet the paper, slide the decal off, and smooth it on the mug.
3. Fill with tea bags, and place it on the kitchen counter where Grandma won't miss it. Be sure to tie on a little gift tag so she knows who to thank on May Day. The finished product is not dishwasher-safe.