I've got a full-height 5 1/4" 1GB hard drive around here. Thing is massive.
I've also got most of the storage devices I've ever used over the decades:
- 5 1/4" floppy
- 3 1/2" floppy
- 4mm DAT tape
- 8mm DAT tape
- 1/4" QIC tape
- Zip disk
- Cassette tape
- Punched tape
I'm missing the following:
- DLT tape
- LTO tape
- 8" floppy
- IBM 2315 disk pack
Never used 9-track tapes, punch cards, or removable disk multipacks.
EDIT Don't know how I forgot about cartridges (Atari 400 and 2600 - still got em!) and CDROM/DVD/WORM. I have CDROM, DVDROM (in various formats), but no WORM media (i.e. IBM 3363 - a CDROM in a rigid case, before the official CD standard was created).