Take them to a farmer. Most of them have pigs. They love to roll these balls around the pen, keeps them from rooting underneath the fence.
Use them for borders around the flower bed, sidewalks, etc.
Most "bang" for the buck is shooting them out of a cannon. Do a search, there's an article about how the guy built the cannon and how far they'll shoot.
Seems like it was probably Michelle that posted it, she's into all the wierd stuff.
--------------------
~~~SrK - Have balls, will travel
Old bowlers never die, we just don't score as often