[Rockhounds] Junior Geology

[Anita D. Westlake]

Hi Folks:
   I'm staffing a booth at an upcoming festival here in Atlanta. The
organizer wanted me to do something on "Jr. Geology". I've thought about
getting a baby swimming pool, filling it with sand and hiding some
"treasures" from the rock world. 
   I've also got a thing called "The Name Game" where you match up rocks
with their names. 
   Does anyone have any other ideas? This is for the 1-12 year old crowd, so
I need something quick and dirty. Nothing complicated, but something they
can learn from and enjoy. (I don't ask for much do I?)
   Thanks for any ideas you can share,
Anita