You can get yard game sets at Target. They have them now. My son is little (4) so we got just the very cheap, plastic sets of horse shoes and badminton, but you can get nicer ones. You can buy individual game sets or a big case of all the games (badminton, croquet, lawn bowling, horse shoes etc.)
When i was a home from college in the summers, I loved playing badminton and croquet in our yard with my brothers and parents. We didn't really have many friends around (our parents moved when I was already away at school, and my brothers stayed behind with their mom to finish the school year) so it was just us, and we had a blast... Okay, we also had a pool, so that helped, but the lawn games were a hit as well.
HTH
T.