I concede that very few people bother to learn the sequence or create a keybinding to symbols used at school. You can copy/paste if you only need it rarely, or use a software symbol selector (its icon in Word and Sheets is literally Ω). However, every keyboard that has a searchable emoji picker should also index the rest of Unicode in my opinion.

Custom keybindings I use the most are (in no particular order) πµΩαβγΔΣσ²³±√∞≤≥≠∈⋮⌀∙█⚠☢☣♥⚙✔✖❗←↑→↓·–ẞ, nbsp and hair space. There is also ☃ (Shift+AltGr+8) as an XKCD reference.

[–] madjo@feddit.nl 1 points 2 weeks ago (1 children)

hair space?

[–] ChaoticNeutralCzech 2 points 2 weeks ago (1 children)

Thinnest Unicode whitespace. In my headcanon, the Czech language uses it as the preferred thousands separator (though some people prefer thin space, and most people just use space or nbsp) and I sometimes use it in German and English too because it's unambiguous.

Example uses:
3 141 592 653.589
s u b t l e k e r n i n g

[–] madjo@feddit.nl 1 points 2 weeks ago

That's awesome! I had never heard of it. going to see if I can incorporate it in my daily use