There’s Walmart parking lots on the air, WMPLOTA.

TOTA https://hope-16.totawatch.de/rules/

I created a list. No doubt there are more. Please add.

• https://github.com/vk6flab/activations-on-the-air

I once proposed a “toilets on the air” event where you took a QRP CW rig into a bathroom, sat on the toilet, and texted like it was 1912.

edit: someone beat me to it.

I think Breweries on the Air would be fun.

Extra points for CW after a few beers :D