You can get 'sandwich' enclosures that put the mini between the monitor arm and the monitor itself, or off to the side. That's what I do with an M1 Mac Mini sit

You can get 'sandwich' enclosures that put the mini between the monitor arm and the monitor itself, or off to the side. That's what I do with an M1 Mac Mini sitting next to me. Maybe it's a blessing in disguise since you can get these cheaper than what Apple would sell them for :)