My kids ages in the summer will be: 2, 2 1/2, 2 1/2 and 6 years old. I have only been in business since last July so I don't have a lot for outside. I have a sandbox but the kids didn't really like it and balls, basketball set, and water table. Want something that the kid will enjoy as I like to haw them outside as much as possible when it's nice out.