I frequently hit several of the custom knife shows, though I haven't in the last few years. They have gotten a little wild for my tastes. I was never really into folders, so I carry few interesting folders. Some random things from ImageShack:
Hiroo Itou 5" Petty, damascus style rendered in stainless.
Henckles folder -- made sense for me as I used to use their knives primarily in the kitchen.
Forgot who did that one. Nothing special.
I often wear one of these when it is not contravened by law. Sadly the maker has passed away. But they were convenient and had none of the drawbacks of folders, nor a fixed blade's poor carryability. He also made me a liner-lock folder in titanium with grey wood scales in the above that I carry sometimes. I used to keep a Victorinox Ranger in my day bag, but it was replaced with a Leatherman. Have no pics of any of the custom pieces available at the moment -- some of Herb Derr's work, and the big Odin bowie hanging in its glass shadowbox over my shoulder. We do have/had one custom knifemaker here on the forum. ~ H