I have four boys. I learned a long time ago that I needed to streamline their toys. I narrowed down their toys to 4 main groups: Legos, wood train, Matchbox cars and small trucks, and Knex. These toys we have in bulk because we have so many boys. They each have a few Nerf guns as well.
When the boys play, they are allowed to choose one from the above list, for that day and it is easy to clean up at the end of the day. This keeps our home orderly.