I just got an Indigo2 for the first time in decades (I found it for a fantastic price, and I couldn't resist), but of course it did not come with a keyboard and mouse. For now I'm using an IBM Model M keyboard and a generic 3-button PS/2 mouse, but I would love to recreate the system that I had when I worked at SGI in 1996. We were using the old-style granite keyboards with the logo on the left-hand side back then.
If you have a granite keyboard and mouse you're willing to part with, please let me know. I'm located in Washington State in the US, and I'm willing to pay reasonable fair market value!
UPDATE: I've found the exact keyboard and mouse I was after, thanks all!