Time: 2.5 hours
Materials: canvas/cotton bag, paint, circular sponge
*tip* If you want to save time, buy more than one circular sponge of the same size. Otherwise you will have to rinse in between each color each time you stamp a side.
1. Fill the inside of your bag with books for a smooth hard surface. If you happen to like your books don’t forget to protect their covers from paint with a thick sheet of paper.
2. If you’d like there to be order to your polka dots, a straight edge will help keep everything in line.