I didn't really "create" anything, I just did a good mod.
1mb worth of pics here
I saw a lonely Namco arcade stick (really a Hori) that GamePnoy had in the "Post Pics of Your Gaming Setup" thread and he sold it to me. I did a lot of cutting to put a Sanwa JLF stick in there, or at least most of it. The resulting Hori\Sanwa hybrid joystick feels so fucking good to me. It is hands down the best stick I've yet used, or at least my favorite.
This stick is wired up for external encoders, or gamepad PCBs stuffed into project boxes, so it's as universal as I want it to be. I've done boxes for Playstation, Dreamcast, Genesis, Saturn, and one out of a Pelican Real Arcade that does in fact lend me Live support.
BTW, the same day I did most of this Namco mod, I also put a Sanwa JLF in the Tekken 5 stick. This isn't news in and of itself, since Armadillo from SRK did the mod on the way home from the store the day it was released, and he did a guide for it.
I've got all the pics for another fully illustrated tutorial for the T5 stick, and I show how to mod it two ways. One way with NO solder and NO dremel. 'Course, I can't really brag about this because I've been sitting on this info for a solid month like a shithead.
The guide will be up on my site by Monday, I fucking swear. (crickets)