The Spelljammer Business Challenge was a contest is being held on the Spelljammer Mailing List in October of 1999. It's purpose was to create interesting, ready-to-use businesses for Spelljammer DMs.
Flannigan's Fabulous Magery — Gerese Trading Cartel — Kel the Slaver — The Nodding Donkeys — Strateverian's Cabinetry Shoppe