Use customizer to make however many slots you want! The photo shows a 2x3 block that holds 6-12 cards depending on their type. Your print bed size is the limit!

I totally loved the design of https://www.thingiverse.com/thing:2835728 but like so many commenters, my sticks and cards didn't fit very well when printed on my machine.

I did my best to re-create the look and feel of the original within OpenScad so that this version is totally customizable. Any dimension that doesn't fit to your liking can be tweaked independently of all the other parameters controlling the object's creation.

For example MASD cards are the same thickness as SD cards but just a bit wider. By making the 'SD' card slot 25.1mm rather than 24mm I can hold either type of card in the same slot.

As added benefits of this version, the number of slots to be created can be controlled and a USB-C stick slot is now present.

Prusa

i3 MK2S

No

No

0.3

20%

Print the TEST version and anything that doesn't fit to your liking can be adjusted to be looser or tighter under your print conditions with customizer.

If Thingiverse customizer takes too long or otherwise doesn't work, it's simple to install the free software "Openscad" and open the .scad file directly. Then you can quickly and easily customize anything you want on your local machine. F6 renders and F7 writes an .stl from the rendered object.

WARNING: The $Precision parameter controls the number of facets on fillets and other curves. Setting it to a very small number like 0.1 will consume LOTS of CPU and generate a proportionally large file. Don't use a number smaller than your print resolution can actually use.