Currently, I have too many laptops to juggle comfortably on my desk. So I decided to build my own laptop stand which can hold up to three laptops. One laptop can be opened, the others are held vertically, so they can be attached to an external monitor. At the back there are some straps which can be used to fixate cables.
The stand is designed in Fusion 360 and cut with a CNC router (actually a Shaper Origin). Feel free to use my plans to cut your own or modify them. Find the plans here.