This activity can be done two ways:
1. The way I did this was find dollar store/thrift store items, bury them in plastic tubs of potting soil, and give students spoons to dig them out. I also had a tub of water with some toothbrushes so that students could wash off their "artifacts." Then they filled out the worksheet.
2. Have students conduct Internet research. Give them ideas of famous artifacts from ancient times and have them fill out the worksheet based on that artifact.