HDMI to CSI Camera Adapter. Then you hook it up with PiKVM. https://docs.pikvm.org/v2/#required-parts

Wow I forgot about those. Always wanted one but too expensive for me at the time.

Sell them on eBay, buy an SSD based device.

The phone app Kore works pretty decent as a remote.

CLickbait bullshit and everyone that upvoted is responsible. This is stupid, you can do better.

I stay away from apt. apt-update for me has never messed like apt has.