I am looking to make a gravity room. Does anyone have plans they would be willing to share on how to make it correctly?

I am also looking to do a room full of gum balls with PVC balls (like in a ball pit). Make a ball pit ppl have to walk through but a vaccuum that pulls some to the ceiling so they could be dropped down out of holes without any actor operation needed. Thinking floor to ceiling would be a 10-12 ft pull. Any suggestions on what could be used?