I recently added another item to my collection of probably useless computer hardware - a LS120 SuperDisk drive, complete with some brand new (well they might have been sat in a box for the last 10 years) unopened 120MB floppy disks.
I installed it in my main PC using its ATA interface and it shows up as drive A: in Windows 7. Write speed is about 250KB/s, I think this is slower than a Zip drive but faster than 1.44MB floppies.
I've also got a USB Zip drive so if someone discovers a load of Zip or LS120 disks then I might be able to help them. It also reads/writes normal 3.5" floppy disks so I replaced the floppy drive with it.