DIY Dual Duty Perler Beads Coasters or Drink Covers Tutorial from Loppi.These coasters/drink covers can be made out of Perler or Hama Beads - so they are very cheap and easy to make. For lots more Perler Bead DIYs go here. The video is not in.
this one sounds even easier to make: bubble snakes = easy quick craft. Cut the bottom off water bottle. Put old sock over bottom and duct tape. Add food coloring for fun. Dip end in dish soap mixed with a little water