re: Ideas for my son to start inviting his friends to our house

I always have the kids friends over if I can.
1) nerf gun battles are big
2) rc cars - we built a jump ramp together and it's great fun
3)video games/ tablet
4)bike rides
5)knee hockey
6) build forts
7) bb hoop set up maybe by the road if you need to
8) movie on the projector. If it's warm do it outside
9) fire pit, stores, sparklers
10) model train sets or something similar that the boys can build all day
11) 2x4s and ball and putter. Make your own mini golf
12) fishing if a spot near and then clean the fish with them and cook and eat
13) slip and slide and sprinklers and water balloons outside on warm days

Just a few ideas that may help