I also got into computers, thinking about it now, the tactile aspect was probably part of it. A power button making fans go whir and hard drives making slight crunchy noises and my keyboard with real springs… I miss a lot about that.

Also that power supply, Honeywell / microswitch used to have a huge market share for those sorts of components and it looks a lot like it could be one of their paddle/lever rocker switches, maybe AML33EBA4AA01. I don’t think microswitch components are easy or cheap to come by anymore but salecom do knock off versions of lots of them that will likely suit your needs

These are awesome. You make me miss the days of proper physical controls with real haptic feedback. Not this touchscreen with a little vibrator in it bullshit.

I also really wish I could push those buttons now. I want to know what they feel like!

You want some kind of metal waterproof flush mount momentary push button, but without a brand name, it’s hard to say which will give you the right feel. There’s no telling what sort of spring mechanism is in there.