Description:

Support for mini whiteboards for writing memos, it can be used vertically and horizontally and has a space to place the marker on the back.

Whiteboards:
I used blank RFID/NFC cards, but you can also use old cards (hotels, SIM...), or you can buy special mini whiteboards (more expensive).

(The dual color is only for aesthetic)

Idea

The idea came to me while watching: Scott Yu-Jan

YT: Organizing my Drawer with 3D Printing