Architecture: Fascinating Cool Playhouses Ideas For Your Kids, Cool wooden playhouse with wooden stairs, climbing boards and red slider (I would like something like this, but I would add a sandbox underneath)
Leave plastic animals in a bin outside (near the garden, next to the sandbox, next to a patch of trees, etc) -- when children go outside to play, they them and let their imagination.forward to playing outside
Husband built this kidney shaped stacked flagstone sandbox. It's approximately Perfect option for an area that is not level. The ground toward the tall grass in the picture is actually lower than the tallest end. This would be great for a firepit too!