https://mynoise.net has a ton of sound generators, pomodoro mode, and lets you mix the generators any way you like (see https://mynoise.net/superGenMaker.php) or combine the stems from multiple generators into one (see the directions at the bottom of https://mynoise.net/Community/).

I had the same thought. I've been layering multiple ASMR/ambient youtube videos recently and I find it amazingly relaxing.

For example, currently listening to these three:

- https://www.youtube.com/watch?v=CNi5yUO14jg

- https://www.youtube.com/watch?v=trpcSJtvMxk

- https://www.youtube.com/watch?v=aCLrDKAv9Fw

There's a million different options out there and it's surprising what layers well.

I suppose one could do it with... 2 browser tabs. Ah but you end up with 2 countdowns.

Makes me wonder about the difference between "ambient cafe: Starbucks" vs "ambient cafe: somewhere in the Middle East"...

Haha never thought about that. Maybe I can find a way to add something like that.