This is based on a game I used as a soccer drill when coaching first graders. It's similar to frisbee golf without the scoring.

Play this in a park with plenty of trees. Pick one tree at random and tell the kid or kids: "There's a bear in the tree! Let's get him down!".

Taking turns, throw your frisbees until someone hits the tree. Go in order and make each throw from where the previous throw landed. When someone hits the tree, say "The bear got away! Where did he go?" Have them point out the tree the "bear ran to" and that's your next target.

The scoring, so to speak, is that whoever is first to make it to the tree gets to choose the next one.

This is a great, no pressure, somewhat silly kind of game that helps kids just learn how to throw with a little accuracy. If the game seems unbalanced - perhaps you have an older kid who's more accurate - let them make their throws from a closer point, perhaps where the more accurate kid starts.