We accidentally made our cat yell when we point at her. Not even sure how it happened tbh; some combo of squirt-bottle-get-off-the-counter and very half-assed start to clicker training. At least we have a goofy party trick when we have people over I guess?
As a kid, it was the local oldies station for a while, then swapped to this long-form recording of ocean surf my parents had on CD.
These days a fan is fine, though I’ll put on rain or surf white noise, or ambient music, with headphones if I’m travelling somewhere & it’s noisy.