Parametric vertical laptop stand
thingiverse
This is a stand for holding your laptop in the vertical position with the lid shut (either for storage or when using an external monitor). It's not fancy-looking, but it has the advantage of being a SCAD file so you can measure your laptop and print to fit. So far I've tested with my MacBook Pro and it holds snugly and feels sturdy. I have a small printer, so I have a "bounding box" option where you can provide your printer's bounds and clip any extra part of the model. As long as your printer isn't much smaller than mine, I think this will still produce a strong enough stand for you.
With this file you will be able to print Parametric vertical laptop stand with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Parametric vertical laptop stand.