The Mathmos Thaw is an ingenious tea light candle holder and shade because it's made of ice! Just fill the silicone mold up with water and freeze, pop out the ice shade and place over the tea light candle. Then slowly the ice shade thaws/melts over three hours and refills the base below ready to be refrozen again and again. Very cool idea.
Mathmos Thaw - Fire and Ice Candle Holder