Kid parties. A room for pizza and soda, with folding tables, and chairs. Each kid gets a slice and a soda.
Parking.
More of a mix: pinballs, video games, and old arcade pieces (shooting galleries etc.).
Rent games for events, such as parties at a residence.
Pinball league, meeting there weekly for friendly competition (byob?).
Guys doing this seem to have to struggle a bit to make it work.