I started with a conventional "X" stand. Double braced for solid, no bounce. I then added 2 Qik-Lok mic boom arm attachments, only for the laptop, I took out the boom and modified some Ultimate support parts from the old tubular stands to create a moveable, collapsable tray.
The little silver rod you see under the laptop was custom made for me at a machine shop. It's just a threaded rod that fits the boom holder on the bottom, and allows me to screw a flange on top to slide the tube through !

If this setup ever breaks - I'm in BIG trouble. The mic boom arms have been discontinued, and i don;t remember where that machine shop guy lives ! I know he's down near Gary Diamond somewhere, in Maryland.

I was cancelled twice this week, so I still haven't road tested the mixer - tonight's indoors......... I'll report after work !