The "larger postcard case" I found at the 100-yen shop "Daiso" the other day. I bought it for New Year's cards, which is increasing year by year, but I would like to introduce it because it was so convenient to store postcards.
The "larger postcard case" is a storage case that increases the height by 2 cm by rotating the lid 180 degrees to change the engagement. You can add 90 postcards by increasing the size, and you can store up to about 270 postcards.
This feature of "the size can be changed according to the content" is ideal not only for postcards but also for organizing handicraft supplies, painting materials, kitchen consumables, etc.! Since the contents can be seen clearly, you can easily organize small items by classifying threads and beads by color and grouping stationery by type.
By the way, the lid is a type that can be covered like a tool box, so it is safe to stop it with a rubber band when storing it upright. If you overlooked the fact that you don't use postcards, be sure to check it out at the store!