At present I'm using two MiniPCs and a RaspberryPi4 with each connected to a single 27" screen via a smart HDMI switch. 
Keyboard and mouse are wireless and pretty low cost by Logitech, so the vowels, plus R and T  soon wear off meaning one 
or two replacements a year.  To switch from one PC to another I just swap the dongle. 
So my mice have the lifespan of the lettering on the keys before they also end up in the bin.