So, because my wife got tired from carrying around gear, I built this:
With wheels:
The back. The silver box in the middle is the Geekom AE7 mini pc:
The front, including some USB connectors and a Behringer UMC1820:
And a drawer to stash a way a small keyboard and a touch screen.
This drawer is also helpful to reach the inputs at the back, if I need these.
16 Kg in weights, but luckily, as I mentioned above, there are wheels.