I know I'm dating myself, but I used to collect the AOL 3-1/2" disks, unlock them, and use them to record my own files. Saved me $.50 to $1.00 each!
We'll talk about the Radio Shack audio cassettes I first used on my RS Model 1 in another thread... LOL!
Yep. AOL 3 1/2 inch disks came in pretty handy.