"Fire" & ice lantern - pretty awesome! Fill a balloon with water and let it freeze just enough for a thick shell of ice to form. Poor remaining water out, cut off balloon, and stick an led candle light underneath. This could be great for a party.
50 Keep Me Homeschooling Activities During the Long Cold Winter Days
Ice lanterns - we did this last night with the kids in Truckee - it was 8 degrees! Hint - don't bury them in the snow - it's only 32 degrees there, and the snow insulates them so they don't freeze quickly. Sit them on flat snow so that the bottoms are flat, and so they're fully exposed to the super cold. Gorgeous!