@ryanrandall Thanks for the reminder. I’d looked at that box one upon a time, but only for storage for my Field Notes subscription which I’ve put on hold, not going through them like water like I used to. They might work for 3 x 5 cards, but I think they might be too small for 4 x6. They’re a bit on the expensive side for the size, but I’ll add them to my bigger list shortly: https://boffosocko.com/2022/12/26/the-ultimate-guide-to-zettelkasten-index-card-storage/
The Ultimate Guide to Zettelkasten Index Card Storage