This box was intended for used with 3 X 5 index cards. However, it is just a box and can be used for just about anything. Hobby box, parts, change, storage, etc. If you come up with a better use then just note cards feel free to leave a comment. The file includes the box as a top half and bottom separate, or as one file to make it fit better on most printers. Also the corners tend to warp a little, but I fixed that problem with a glue stick.