Today I learned it’s possible to combine packing tape and erasable markers. Now, I can’t help but wonder, how well this can be applied to floppy diskette in place of erasable pencil. E.g., a bit o’ tape over the label.
There’s also the obvious problem that 20-year-old CD-Rs don’t always hold onto their sharpie markings, but that seems like a less stellar idea for rotating media. But I think the answer to that still largely remains archive and digitize.