I saw this idea on Pinterest. You get helium filled balloons and put ninja faces on them, and have your kids shoot them with Nerf darts. I got happy face balloons from Dollar Tree and stuck them in the yard with golf tees.
It was a little windy, so they didn't stay straight up, but Zach said that was OK, because it was more of a challenge that way. :0)
This is how Lily started out:
then she decided this was easier....
They did this for awhile...with NO fights!! Yeah!!
$6.00 worth of fun, that's my kind of activity! ;0)