mamaandmore,
DS had a dinosaur birthday party for his 7th birthday. I might have posted about it before, but we ordered some sort of excavation kit from
http://www.dinosaursrock.com and it was fantastic. Couldn't find it on the site, but it's there somewhere (and it's not the $400+ birthday party - it's a set of real fossils with excavating tools that four olds would be fine with). They sent a block of plaster type stuff that had fossils and gemstones imbedded in it and bunch of little chisels and brushes or similar tools. The kids each took turns excavating real fossils and there were tons of them - inlcuding a 6" megaladon tooth. The kids loved it and all of them got a cupful of fossils (we only had about 7 or 8 kids). Just in case you're interested. And they probably sell t-shirts, too.
