Last week I needed something to entertain the kids while I got some yard work done. I gave them some sidewalk chalk and their box of Hotwheels. They created a pretty impressive city complete with farms, beaches, mountains, schools, museums, monuments, airports, train stations, volcanoes, grocery stores, toy stores and lots more. It kept them entertained and occupied for almost 6 hours. They wouldn't even come in for lunch. I had to bring it out to them. It was like heaven for me and them.