Having many old computers, I've long been collecting endless adapters for SCSI, IDE, CF & SD, video, networking, mouse... and now I find I'm starting to get quite a load of keyboard adapters.
I've got:
5-pin DIN -> PS/2 -> Belkin USB (IBM AT Model F & Microspeed Trackball)
5-pin DIN -> PS/2 -> Blue cube USB (1986 Model M)
5-pin DIN -> PS/2 -> Blue cube USB (1991 Model M)
ADB -> Griffin iMate USB (Apple Keyboard M0116 - orange ALPS)
ADB -> Griffin iMate USB (Apple Extended Keyboard M0115 - orange ALPS - & Curtis Trackball)
Amiga 5-pin DIN -> mini DIN (for Amiga 2000/3000 keyboard on Amiga 4000)
How many keyboard adapters do you currently have?