Logitech is alright for some stuff, but it's random chance whether you get e-waste that breaks in the next couple years or something that lasts a decade.

Actually, just thought of one, if you want wired mice, End Game Gear (EGG for short) is good, they are based in Germany 🇩🇪, they do wireless mice too but dunno about the quality of those. Like most electronics, not made in Europe I think.

Custom keyboards are your best bet if you want to support local business.

As for monitors, no European brands I think (Phillips has been Chinese owned for a while, and they never produced outstanding monitors anyways), plus all the panels usually come from the likes of Samsung or LG anyways.