Protecting grass from swing / slide

[CatchingBabies]

Planning on getting a big swing / slide activity thing for the children but I don’t want the grass under to be destroyed. I’m looking for something to protect it that can be easily switched back to normal lawn once the children have outgrown the set. Any ideas?

Nothing will protect grass from constant use like a swing or slide. Maybe put fake grass down (or even bark) until it's time to get rid of the toys