Ok Judy Cavegirl... check out the Intentional Communities website at www.ic.org. I've been browsing through this, and it turns out there are hundreds of them. Some of them are quite amazing and very advanced like Damanhur in Italy, and the proposed Elusian in California, and others run the gamut. There must be a paleo one in there somewhere...I'm going to keep looking! Also the cohousing idea that Paula posted is worth looking into as well. That's an interesting website. Charles San Diego, CA