I created this stand to save space on the shelf. It is for Leg@ Technic cars, but of course you can use it for anything you want to stack. It is designed so that it does not need to be glued. Just slide it into each other and you are done. A drop of glue will help it. The bottom parts have cutouts in the top plate to prevent the stand from rolling. The last floor is without cutouts.

You can print from PLA, PETG, etc. There are no special requirements for printing.

Length between supports 34cm, top plate 39cm, total height 11cm