I went through some of my old stuff a year ago and found a bundle of 20 1.44 floppies wrapped in aluminum foil in a plastic case. It was a friend of mine who did music production and the disks are labelled as MIDI files. I keep forgetting that I should mail these things to him as he hasn't looked at them in about 30 years. I had the idea of mailing them using his own name and pretending it was his past self sending him stuff.
I've also had surprising success extracting data from old floppy disks. I went through a box of 50 or so 3.5" disks a year or two ago, some of which were 25+ years old, and about 80% of them were either readable directly, or fully/mostly recoverable using GNU ddrescue. Something like a Greaseweazle would likely read even more. Always worth a try!