Mix and match the magic and make your own style, but do it!
Subscription audio CD series
Ghostwriting / co-authoring
Branded retail products
Conventions & trade shows
Agenting and information arbitrage
Seminar company workshops
Radio / TV show
Special reports & white papers
CD / DVD training
Oh what the heck, here's one more for luck: Reference guides & directories software
Sensei Ono, Shinka Martial Arts
How could you best encourage a blogger to blog?