You watch the kids use old cardboard boxes to make a playhouse in the backyard. They are having a good time, but think how much more fun they could have if they had a large wood playhouse. One day the playhouse would be a medieval castle, and the next it would be a Wild West fort. Some days it might even be a pirate ship. Encouraging your children to play outside is important, and with a kids' playhouse you can be sure they are never short of something to do. You can help bring your children's fantasies to life by visiting the reliable sellers on eBay, who have a range of houses in new and used condition, suitable for yards of all sizes. Most houses, particularly plastic ones, are easy to build. Buy one and then watch with joy as your children turn their new playhouse into a home, or a castle, or a spaceship.