Indeed, the playground game of marbles can easily be adapted to a larger scale with a soccer ball and a backyard. This is a game that should probably be played with another person, although it's possible to do it alone if you're intent on finessing your passing and striking skills.
You'll need two soccer balls for this one. The first player will kick the ball out, and once it comes to a stop, it's the second player's turn to try and strike the first ball. If she hits it, she gets a point. If not, the first player gets an attempt to hit the second player's ball for a point. To make it a bigger challenge, play the game fast; there shouldn't be any significant pauses between strikes. You can also test yourself by making a rule that the ball must be hit before it comes to a stop.
These soccer variations should keep you (or those kids home on summer break) busy for a while.