I'm a big fan of the rollbar frame for the rPi official touchscreen, but for a project I'm working on, I needed the frame in portrait mode, so I made my own design.

For the bottom and top, there are 2 possible modes so you can choose your own configuration.

I only use support on the bottom frame to support the bridge between the 2 legs. I print the top upside down so the print lines match with the bottom part.

I have some extra add-ons like a camera mount, Pi case, and enclosure in development but haven't printed them yet. Once I know they fit and print well, I'll also upload them.

There is one small issue with the Pi power cord. When the Pi is mounted on the standard screen stand-offs, it's a very tight fit to plug in the power cord. You will need higher stand-offs or use an L-shaped USB adapter (which is the nicest solution) to make the power cord fit without bending it.