I wanted to be able to access it easily from my workbench, so I designed it to be screwed under the tabletop itself.

I used Transparent Blue PETG and it took 7h55 to print!

This is the Result. It is a THICK piece of plastic,it's heavy (~300g).
The bottom curve is really rough due to the speed i printed at and the supports settings

To prevent scratching the beds everytime I store them, I added fleece type of fabric.

After installing it, I tried placing a few beds to see how well it works.

The use of a screwdriver/a drill is obviously required for the installation ,but I guess it's not something I thought about sadly.I can't screw it all the way, even trying with a fancy flexible screwdriver did not work :(
I think the only modification I would do is a hole through all shelves to install it and thinner walls everywhere.