How to optimize the workplace?

Question

Iron

The essence of the question is as follows:
1. Are there HDMI hubs? PC HDMI input and box with USB 3.0 and HDMI connector for a monitor, a 3.5mm jack would also be ideal. As a result, it was ideal to put the laptop on a cooling pad, turn on the power and one HDMI and work on the monitor.
2. How to optimize the work of two PCs (system unit and laptop) with the above requirements?
Ideally, you work on a PC (everything is connected via HDMI), connect a laptop via HDMI, press a button on the monitor or a separately displayed button and work with a laptop (the same mouse, keyboard, audio, etc.)

Answer 1

One monitor, laptop via HDMI, PC via DVI or DisplayPort, change the source with the monitor settings. There are models that have a physical button for this.
Or KVM Multico EW-K1302HD costs 5500 rubles. The button for changing the source has been removed, so that all the "ugliness" can be hidden, and one button can be left on the table.

Answer 2

KVM switch
https://sep.yimg.com/ca/I/kvm-switch_2269_12163858