I saw this Yamaha tin at the secondhand store. I had one that looked exactly like this when I was little and attending the Yamaha music classes.
There were magnetic music notes and such, and you'd "compose" on it, or work on little music projects with it when the teacher asked you to do so. You'd also store your small music sheet notebooks and crayons in them.
Of course I had to buy it.
There are only two each of the Flat Key Signature and Sharp Key Signature symbols left in the box, but I was still really excited to have a cute tin that reminds me of my childhood beginning piano lessons.
Now I store my little colorful and patterned/decorative tapes in it.
I love this tin!