Say what you will about suitcase computers, but at least most of them still have their keyboards with them. [danjovic] has this vintage Brazilian computer from the 1980s called a Gradiente Expert.
I've come to a situation where I have a desk that is used by more than one mac (though never at the same time). The desk is set up with a nice USB-C/TB3 dock with stuff attached (audio, ethernet, ...