Express card slot SD card wallet
thingiverse
This SD card holder fits into the Express Card slot in your notebook computer. Holds 2 standard SD cards and 2 micro-SD cards. The size of Express Card is based on standards but I tested it only with Lenovo X230. Depending on your printer you may need to widen a micro-SD a little. I attached freecad parametric file for anyone to tweak with it.
Download Model from thingiverse
With this file you will be able to print Express card slot SD card wallet 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 Express card slot SD card wallet.