Question: I just got a new work laptop. I would like to seamlessly switch my bluetooth devices (headphones, magic keyboard, touchpad) between work / personal Macs without complex repairing.

Has anyone solved this problem?

Ideally, I would love it if my bluetooth devices just paired with the computer docked into my dongle that connects to my monitor / power. Like if there was some kind of USB bluetooth controller that exposed my bluetooth devices as USB devices to whatever was connected to it, that would be awesome. But I haven’t found anything like that. I’m curious if people have different solutions?

It would also be ideal if this could be used for other bluetooth devices, ie seamlessly switch headphones...

Answer: 
The Apple Magic Keyboard does not have similar functionality.

If you want to quickly switch between devices, the best way to do so is to (at least temporarily) connect the keyboard to the Mac you want to use it with via a lightning cable.

Ideally, if you are swapping between them frequently, I would just leave a lightning cable connected to both, and plug it in to the computer you want to use.

Obviously not as slick as something that has a button to press to switch between devices, but it's the best way to switch between devices without buying new hardware.

Toothfairy
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There is also a Mac app called [Toothfairy](https://c-command.com/toothfairy/) which will let you connect/disconnect Bluetooth devices from your menu bar. $5 from the Mac App Store or part of Setapp.

Toothfairy is usually thought of as a tool to help with AirPods, but it works with all sorts of Bluetooth devices, including Magic Keyboard and Trackpad. A nice bonus is that it can show you the battery level of each device in the menu bar as well.
I have a lightning cable connected to the hub that drives my external monitor. And connect my work or home laptops to my monitor. Then I can plug that lightning cable in to the magic keyboard and/or trackpad when I switch or when I need to charge the keyboard or trackpad. I don't switch all that often, so it is good enough.