I have a Corsair K95 rgb Platinum mechanical keyboard, with MX Clear switches (it was a present). The keys are very sensitive - I can type on it by just touching the keys, hardly making any sound at all.
I love it, but it took some getting used to (my previous one was a Logitech G15v2).
My first keyboard, late 80s, was a Cherry mechanical one (looking a lot like a Model M). But that was a log time ago...

Ironically, I prefer playing most modern(ish) (non-strategy or point 'n' click) games with a controller.

edit: important features on a keyboard, for me: backlight, media keys, volume wheel, numeric part. And while not a big fan of FPP games (especially FPS), I've never played them with WASD (but with arrow keys).

After doing some research, it looks like the Rock Pi S has both USB host and device ports and hence could be usable for the applications I mentioned.

Pricing ranges from $10 to $24 depending on features (might at least want the internal storage to avoid the need for an SD card, unless one feels that having everything on easily removable storage is a benefit), and there's no video adaptor (so only suitable for headless displays), but it could work. (Note that this is more expensive than a Raspberry Pi Zero, but it appears to have a more powerful CPU and does have that extra USB port.)

I did find some other Raspberry Pi Zero alternatives:
* Orange Pi Zero
* Banana Pi Zero
* NanoPi NEO (also a ZeroPi)

(I would probably be interested in one that is at least ARMv7 and has hardware virtualization and USB OTG (with device mode supported); video out is not needed here. Also, I would want one that is supported by the mainline Linux kernel, with the features I mention here supported in 5.5 or 5.6.)

Another thing I am curious about is what cheap tablets could run Linux. Basically, it would need:
* Must be supported by the mainline Linux kernel. (Again, the target version is 5.5 or 5.6.)
* Must be possible to unlock the bootloader if it's locked, and said unlock must persist. (If it has UEFI, it must be possible to disable Secure Boot.)

(Note that Linux 5.6 is not out yet, and as of this post, the merge window is still open.)