This nifty Mathmos Thaw gadget from ThinkGeek produces a melting ice shade that “changes shape and size over time, producing a truly unique and interesting candle light.” Video after the break. Click here for one more picture.

Simply place the water filled mold in the freezer overnight. The ice that forms in the mold then becomes a thawing shade for the tea light. The ice takes about 3 hours to thaw and the water melts back into the mold