Directions are in Spanish, but I love the idea!
DIY: wool felt ball coasters (other diy coaster ideas)
Paint plain, clay coasters with a delicate pattern for tea-time ready decor. Get the tutorial at The Lovely Drawer.
DIY sliced watermelon coasters - Kittenhood Like the idea of using other patterns
Make the cutest coasters with just a little bit of acrylic paint.