We are studying the Stone/Bronze/Iron Age right now and had a lot of fun making small Stonehenges.
We got this idea over at the BBC website in the Hands on History section. There are so many great resources on this site, I spend a lot of time there. There's an interactive game where you can built a fire, bake bread, and spin wool in the Iron Age. It's really fascinating. I'm going to try and have us do these activities for real, but I sense disaster. It should be fun. I need to find some soft-ish rocks and do more research.
I printed some out-of-scale grass for the ground. We decided the too-big grass was an nice artistic touch. We had a gluing mishap—air dry clay and hot glue are not friends. They totally ignore each other and don't stick at all. So, the white glue came out and it worked just fine. We have been using flashlights to cast shadows on these after learning all about Stonehenge and how the stones aligned with the sun on the solstices. We really enjoyed this video, BBC Operation Stonehenge.
I had to try and find the scene in This is Spinal Tap when the mini-Stonehenge gets lowered on the stage and couldn't find the clip, but did find this—Nigel Tufnel on why aliens didn't build Stonehenge which killed us! I had no idea these clips existed and they are really funny.