- Twilight backpacks

- Twilight messenger bags

- Twilight door hangers

- Twilight magnets

- Twilight buttons

- Twilight bookmarks

- Twilight stickers

- Twilight posters

- Twilight boxed sets

- Twilight board games

- Twilight movie companion books

- Twilight cast member biographies

- Republished copies of Wuthering Heights that have been Twilight-ified and marketed as "Bella and Edward's favorite book"

- Actual copies of Twilight

But most of all...

- Customers who buy all of the above items.

Sigh.