I'm building a detached garage with the intention to use much of the space as an indoor gym/athletic training facility for my kids and their friends that they train with.

The building is 51 feet long by 27 feet wide with a 13 ft high ceiling. I'm leaning towards a 40 foot length by 10 ft wide batting cage along one side of the building. I will have artificial turf laid out for the batting cage and plan to design it to be pulled out of the way for sled pulls, footwork drills etc...

The other half of the building will be available for some sort of gym rack and strength training equipment.

I'm looking for any and all suggestions on what to put in the building — please link your suggestions and ideas.