Acme Ferret Company - art rubber stamps (especially ferrets)
The Blue Cat's ferret page - mats, hammocks, carry sacks, vests, hats, etc.
B & R Pet Shop, will ship anywhere in the continental US
Cheweasel - a chewy toy for ferrets
Changing Horizons - figure-8 harness, leash, metal bowls
Cloud Dusters - flags and banners, beds, and a "puff" ball (email)
"The Cage" - cage top for pickup trucks
Critter Kages - unique ferret cages
Chris Thompson Insurance, a UK company which claims it will "insure exotic pets"
Country Ferrets breeders (not working)
Critter Creations - carrier covers, tags, cage carpet, etc.
Different Strokes - ferret hats and clothing (email)
Emilie Wilson - hammocks and sleeping pockets (email)
The Ferret Company - publishers of the Ferret Calendar, greeting cards, shirts, etc.
Ferret Curiosity Shop - sleeping bags, magnets, cutting boards, jewelry, etc.
Ferret Essentials - health care, carriers, cage supplies, food, etc.
Ferret Wise Funalia - mugs, tents, cage supplies, etc.
Feret Haven Cages - nice, big cages and accessories
Fascinating Ferrets (Debbie Miller)
Flemming Farms (Derek & Amy Flemming)
Ferret Pad (Dave & Stacie Hieb)
Ferret Profile from Critters/Ferrets USA magazines
The Four Ferreteers graphic novel (illustrated, that is, not explicit) and clothing
Ferret Reflections - T-shirts, jewelry, mouse pads, etc.
From Ferrets - ferret greeting cards
Ferret Fun and Fundamentals video (which also seems to have another link)
Global Trades\Ferrets - Canadian distributor of Totally Ferret food (not working)
"The Iams Company - Manufacturer of Pet Nutrition Products"
The International House of Ferrets from Zen and the Art of Ferrets (Bill & Diane Killian)
J.Anne Butler Images - sculpted ferret figurines
L. S. Irish - limited edition prints, personalized pet portraits, etc.
Morgan Designs - ferret cross-stitch patterns
Modern Ferret Magazine - "For ferret owners. By ferret owners. (TM)"
The Odor Police - odor "absorbers" (not working)
Pet Expo's ferret supplies
Pet Shoppe's ferret supplies
Pet Castle - plastic "Critter Castles"
Pet Amusement Lair - acrylic "Habitrail"-like system that hangs on the wall
PetHouse designer litter boxes
Pins from Zen and the Art of Ferrets
Pet Prints ferret calendars
Petloves: artistic products for pet lovers - portraits, prints, shirts, cards, etc.
Pet Lovers - airbrushed shirts, bags, aprons, etc.
Susan's Ferret Fancies - toys and beds
The Stationary Ferret - cards and stationary
Treasured Ferrets (Pat Ball)
Vermont Keepsake Chests - small wooden chests or cremation urns with painted pet pictures
Wild Side Publishing, home of "The Big Adventure" book
Weaselware - address labels, stuffed "teddy ferrets," and notecards by Pam Greene (not working)