low marimba
with bass boost/treble reduction is even better
Light rain on leaves
Cat’s purr
Crashing waves at the beach. Seagulls are little assholes but they add to the effect for me
Locally, indoors? Silence.
I like to be able to hear whatever is going on outside. Ideally, that would also be silence, but if something is going on outside, I like to be alert and aware of it.
I’ll also take a little rain and occasional thunder outside, as usually people aren’t acting a fool outside during rainy weather.
The gentle thrum of a Federation starship’s warp core.