If you’re comfortable with it, an analog (non-networked) kvm switch can have its button connected to a single input Pikvm via the GPIO. You visit the PiKVM’s webpage, hit a button and you’re now connected to a different machine.
If you have a raspberry pi 1 or 2, this isn’t very expensive, but nets you an open source IP KVM.
Oh shit, same! I had to upgrade some oscilloscopes, and thought I’d get these. Dead, instead of a year, all 5x.