Finally along this row is what I call Archimedes corner, my A305 and A420/1, sharing mouse & keyboard as well as monitor. Currently I have no keyboard switcher so it's a case of plugging it into the correct machine.
The monitor is shared used VGA switches. There are two of them because the output is also switched between the monitor and my screen capture setup, via my DVD recorder.
The A305, Econet Station 35, was dead for many years and runs RISC OS 3. The A420/1 has been in the wars and has broken floppy and hard disc interfaces, so it's an Econet only station with number 42.