We could get more extravagant, but these are simple affordable ideas for independent child play.
Outdoor:
-trampoline, swing sets, jungle gym
-explore the town, meet people, buy candy
-city park
-skate park, skate, scooter, bike, rollerblade
-airsoft guns
-sand box, dig holes, find bugs
-play with farm animals, walk the dogs
-basketball, soccer, baseball, frizbee, golf, croquet, badminton, wrestle
-field games: hide and seek, capture the flag
-set up camp tents, fires, picknicks, ropes in the yard
-swim pool, sprinklers, water balloon fight
Indoor:
-put wrestling/gymnastic mats on floor of garage, make it a rough n’ tumble play area
-fun or educational video games
-board and card games
-nerf guns
-dart board
-sword fencing (metal or foam depending on age)
-Legos, knex, etc. hand building toys (better than Minecraft as increases hand eye coordination, etc.)
-playdough
-color & paint
-reading! Make this a popular event in your home!
-fun or educational movie, educational shows