I was doing some cleaning on my room and I found some floppy disks, they are around 15 years old! from the Sony brand. I don't have a floppy disk device anymore on my computer, so I used an older computer because I was curious to see if they would still work.
To my surprise, they worked and all the files were accessible.
This made me think that, you could store some Bitcoin related stuff in floppy disks too? Obviously having backups in other places too.. but floppy disks may be yet another cheap way to store files. If I put my seed key in a txt (compressed in a 7z file with a pass) and my wallet.dat file on that floppy disk, it would have lasted for 15 years. I hope that if I do this, in the next 15 years when I find the floppy disks again, I will be rich

The older the floppy, the more reliable it is. Floppy quality started to degrade seriously around early 90s.
If you're planning on storing it on a floppy, also make sure to save it on another media, such as an engraving on a dog tag. Don't trust anything that involves magnets (floppy) or electricity (flash drive). So far, we're not sure of data longevity on any digital medium, and numbers are simply speculation or based on accelerated/simulated aging.