T.H.
What kind of local museums and kids' attractions do you have? I know here that local museums and such will put on special classes for groups of scouts, or schools or whatever and they usually have a craft that goes with a talk and a tour or something. We even have a popular puppet studio that does a play and then a puppet making workshop for small groups.
Also, Michael's has classes that are dedicated to different crafts and things, you might try calling them and see what is available. I think they cost but they are usually inexpensive and I'm sure they would do one for your small group.