For those that don't want a playhouse in their yard why not create a nest for the kids. This way you have a place for children to play and a unique piece of garden art that you get to design and create.
natural small garden ponds pond is one of great small garden ponds ideas. You can make it by using PVC lining and place it with some rocks around it and decorate with water plants. In order to beautify it, you can raise some fish in it, such as