I didn’t want to spend much money on a stand so I made my own out of 3/4" PVC pipe and painted with a steel colored paint. Turned out great. Hopefully the photo shows here.
https://photos.smugmug.com/photos/i-p9hMbft/0/62956407/XL/i-p9hMbft-XL.jpg
Very nice. Is the top “table” solid or just a square of PVC that is smaller that the laptop?
How sturdy is it?
The top is just a rectangle of PVC sized so the rubber buttons on base of laptop sit on the PVC elbows. I may attach a piece of black poster board to the top though.
It’s plenty sturdy enough as long as you use the schedule 40 pipe.
Cool… photo is very clear… I just used an old camera tripod and bought a $5 IKEA laptop holder and bolted that onto the camera mount (with reinforcing platform of plywood). Very sturdy and adjustable angle,etc. Definitely no need to waste $$ on a laptop holder…better spent on cycling gear 
I use this:
https://www.nrshealthcare.co.uk/bedroom-seating-aids/over-chair-over-bed-tables/over-bed-chair-table-wheeled?fee=19&fep=504&gclid=EAIaIQobChMIvt6gusST2gIVirXtCh2lJwdMEAQYAiABEgJ9A_D_BwE, cheap as well as functional
I made a similar stand but used 1 1/4 inch PVC to aid stiffness and used Plexiglas for the desk surface. I had to add a support under the desk surface to prevent it from bowing under the weight of a 30 inch monitor. I also have to use a mouse pad since the device will not work on the clear surface. Cost about $20, but I already had the tubing and Plexiglas.
Looks great Russell