Volume knob (custom)

Can anyone recommend some places that make custom knobs or a good selection to choose from for amps? Thanks for any info.
Try ebay - type in "volume knob"
I know of a guy who makes them out of exotic and north american woods. Hes very good at it and will do custom sizes for you. If there is a way to private message send me one with info if you would like to get in touch with him,