Haven't you ever heard of this jail charity thing?
It's been around for decades.
You volunteer to do it for charity.
You get in the "jail" and then call your contacts on the phone to get them to donate money to get you out.
This was a popular fund raising event for Muscular Dystrophy Association (MDA).
Volunteers go in the "jail" for a specified time, maybe a hour.
A place I worked for in the 1980s did it to help MDA.