Summary

Laptop vertical mount brackets. There are three parts

U brackets: print two for the bottom of the laptop.
Slide-Bracket Part A(latch): Print one for the side of the laptop, slides into part B ( you can use two if you wish)
Slide-Bracket Part B: Print another for the side of the laptop ( you can use two if you wish)

The small holes in the slide brackets are for a string or fishing line... I use that to keep from losing/dropping Part B.

Just space everything out before you install these, as to not interfere with any ports. Sometimes I need to keep the laptop from being closed and I can do that by just inserting the latch with the laptop open.

I have printed with PETG, and it has held by laptop with no issues for many years.