Here you can make your own Archaeology Dig Kit with plaster: Hours of Fun! Great way to hide small gifts and make your kids work for them!
Here is another video for an excavation kit, smaller ones would be great for a kid’s party: =HiPakwYa6O8&feature=emb_logo
(See featured image)
This website has steps for building a Lego Stratigraphy:
Here is a good source for learning about Archaeology and Strata:
The Great Garbage Mystery:
Here kids go through trash (you can presort it of course) to make inferences about the people who it belonged to
National Geographic (1 min) Video: Archaeologists Are Coming for Your Trash: =VE9b0tG5Rtw
Here is even an archeological “snack” from Shari Blogs: Besides gummy worms you could hide other hard candies on the different “layers”
Place a different type of candy in each layer and have kids tell you which is “older” using the Law of Superposition!