I like to write down my goals for a given day and check them off if they get done. 

For this purpose I printed a holder for empty 86 x 54mm cards. It fits 5 of them. One can be put in the slot on the front to be more present.

Also in the files is a template which you can lay on a card and go along the slots with a knife to create lines in the cards. Once done you can draw with a pen . Since they are structured with the knife the ink will stay on them. 

I used this empty cards https://www.amazon.de/dp/B09MRRLS2B and this pen https://www.amazon.de/dp/B09MRRLS2B . Also a 6x2 Magnet can be used.