Alternate ideas on how to get this insurance

I’m looking for a cheap option to cover me in a specific instance. I do a lot of entertainment at assisted living facilities as part of a nonprofit I created. Most places don’t care if I’m insured or not. One does.

The quotes I’ve gotten for general commercial liability insurance are around $50-65 a month, which makes it not worth it to do for this one facility.

I’m wondering if anyone has any ideas for how I could get a COI (certificate of insurance) for fairly cheap just to show them something so I can keep playing there.

Additional detail: no physical contact with residents, my equipment is basic and easy, and it’s one hour performances.

Thanks!