(from my personal archives September 2008)
We made these babies at the reunion- and they were fun, easy and cheap.
Cement (10 bones) + craft store floral pebbles (two fity) + Costa Vida tin (twenty pennies) = less than 15 bucks (buy more tins and you'll have enough cement to make twenty. You could make one for every grandma, uncle and teacher for less than a buck a piece. The kids loved it and the parents had a memory to take home (okay, so they will probably just throw it in the dirt- but they liked it too).
(note: you take the foil off- this picture was taken while drying, but trust me, they turned out cute)