Say you are only having one child. You have a decent backyard and want to make use of it. Your yard backs up to woods that you don't own but you use for various things.

What would be the best use of your money for something for your child to play with in the backyard...by herself or with us or with friends who may come over every once in a while. A playset with slide/swing, a swing set or a play house? Something else?

We're not looking to spend a lot of money...but we don't want it to look cheap. I feel like a single swing set wouldn't get much use.