Mug rugs are a good idea, but one of the cutest ideas I saw at a bazaar was those coasters made from five squares or five circles, then when they were done, they were displayed with the base of a wine glass tucked into them. It would be a fun way at a party to identify whose wine glass is whose. The set I saw was done in all different fruit prints with solid color backs. Might be something you could make a little money on since they can be made with scraps because you would want them all different.