Alex- Thanks for your comment. We have installed these in public parks and places like zoos and children's museums. But, at a large scale they take a lot of planning and upfront design. I appreciate your question about quick install and turn around.
I think a mix of seating, work spaces, fencing if needed and loose parts is the way to get things done quickly. We have loose parts kits that we supply to facilities that want to have STEM play spaces and child led free play zones. You can check them out here https://pebbleandstick.com/. These kits can be shipped to a site and just opened to start play.
My experience with DIY in our schools is that it ends up being more work then the 'volunteer(s)' wanted to take on. Everything looks easy in the beginning but takes more time and money then expected. But with the right leadership and guidance I think a strong volunteer team could install many items on the schoolyard. We have DIY instruction for a few dozen items like nature kitchens, dry creek beds, bug hotels, etc.
I would love to hear more about what you are working on. Michelle