I know exactly where my Gravis pad is- it's next to my Gravis Ultrasound card- but I can't plug either of them into my laptop!
I think I lost the little joystick adaptor it came with though, along with that cute screwdriver that came with my Gravis Joystick (not black but the limited edition transparent version).
It was a different age of PC gaming!
http://www.armchair.mb.ca/~dave/shust/