A simple math equation

What do you get when you add one rope + one large tree in the backyard + one gorgeous fall day + The Husband's ingenuity?

The answer? You get this, our new favorite toy:

Here's to simple, old fashioned things that keep them outside and away from the television. I am LOVING this. They're loving it, too. So much so that I find them out there at 6:30 in the morning, still in their PJs, gloves on their hands, swinging away.

Now THIS is a good thing.