Install a sandbox to keep him out of your flower beds. Place the field in an unused corner of your yard and fill it with sand or mulch that’s easy to dig up and refill. If you do wish to keep the grass, take into consideration how much lawn your kids really use — a small patch could also be fantastic, leaving more room for different creative parts like water, sand and edibles. Natural tree stumps are a superb yard accent for teenagers. Line them up to make a meandering stepping stone path or circle them round to make a seating area.