From my recollection:
Uwe- Downing Beat TBird II Non Rev
dukeplaysbass- Ines
Chris P- Boilersuit a Bicentennial Tbird pretending to be a Ric 4005
gearHed289- gearHed
Barklessdog - Barkless Dog Kahler RD and overdubs with LP Standard
T.A.Curtis (not a member here)
OldManC- Audrey Smilley silly question! TBird of course!, he doesn't even know how to play other basses
Granny Gremlin- WeLove EB-3
jzumbro- Showdown I believe a Gibson IV
Hörnisse- Snakebyte
EvilLordJuju- True Element RD?
Pamlicojack- Tombstone Daddys is that the two step? TBird then I believe
Doombass- Doombass Grabber, played when he was still a child
Texas Noise Factory (not a member here)- Supavillain
Basvarken- Superfloor Hobbit, what else?