I have two Mathmos Ice Candles, brand new and boxed.
This ingenious tea light holder encases your candle in shimmering ice and slowly melts as the evening progresses. Simply fill the silicone mould sitting within the stainless steel tray with water, bung it in the freezer, then pop the ice 'shade' over your lit candle. The frozen shade then melts back into the mould over 3 hours. Cool? It's positively polar. And the only running costs are the candles and the water.
Amazing reviews on IWOOT and findagift.
Cheapest I could find online was £22.94 delivered by findmeagift, so I have priced these at £17.50 each including delivery.
Postage included - might be Royal Mail, might be myHermes.