I have a 1.2MB 5.25" Panasonic floppy drive in my P4 - I got it out of an old 8088 or 8086 (not sure) - it is still working and is about 20 years old. It replaced a dead Samsung 5.25 floppy that was from a 15 year old 486 DX. Adds a vintage and nostalgic touch to my 3.0 Ghz P4...
Also, my 3.5" floppy is about 10-11 years old.
I am also still using a Pentium MMX (233 Mhz) that is 11 years old, although it received a new 52x CD-ROM about three or four years ago and a RAM upgrade (from 32 MBs to 256). It is useful for older software, although I usually run that kind of software with DOSBOX now.
I have a lot of older equipment that I never use anymore (I never throw anuthing out). I used a 14" monitor for six years (still working now, but not needed) and an old Canon BJC 4100 Inkjet printer for printing text documents for over 10 years.