1.Direct traffic.
2.Empty it and use it as test tube for class.
3.Cover it with wax and use it as a candle.
4.Use it as ammunition for a gun.
5.Claim it as something given to you by aliens, so that you may be the centre of all talk.
6.Hang them on Christmas trees. Perfect gift for those relatives you have never met but are forced to buy a gift for!
7.Build a house?
8.Sell them, hell! might as well make back that money right?
9.Start a collection, trade with your friends.
10.Base a religion around it.