A friend and myself have mounted an Aeolian pianola (automatic piano running on paper rolls) in a caravan and take it out to shows and rallies during the summer months, collecting for Bexley Mencap.
You might think this a strange thing to do but it gets me out of the house, raises small amounts of money for a worthwhile charity and amuses many people.
In addition it gives me the opportunity to listen to endless amounts of Ragtime which I thoroughly enjoy.
[Updated: 02.12.22]