I liked these so much that this item (a package of AquaGem granules)
will be part of my next giveaway!
These are Aqua-Gems. You add water to the tiny granules and as they absorb the liquid they become clear marble sized balls in fun colors. Beautiful for parties and other celebrations, especially weddings. Flowers last much longer when placed in a vase with these gems. I have used something similar for years in my outdoor pots. The gems absorb water so that they provide a constant water source for your flowers. They last a VERY long time, and as the water evaporates you simply have to add more water to rehydrate.
They also sell small lights that can be placed among the marbles that enhance the arrangement. These can be switched to display different colors as well.
You may find their site at http://www.aqua-gems.com/.