LOL! I like that last one, "Cutting the lawn" !
One game I've played is getting a box of animal crackers and spreading them all over the lawn. Then... go on a safari!
Another one I did was cutting a bunch of slots in a piece of wood so that "Teddy Grahams" would stand upright. Got a few different flavors of Teddy Grahams. Set them up so that one is right behind another but off to one side or the other. Then I practiced "Hostage Negotiations" by trying to take out the ones that were hiding behind the "hostages". In the end, they all got shot. They explode nicely and it's fun to watch the slo-mo replay from a scope cam!
Both of these games may have critters coming to feast afterwards. So if they're not welcome, take em out too!
Happy Shooting!