If you're crazy about cord management, these look like they'd do the trick quite nicely.

"Named Sombrero because of its distinctive straw hat shape, this cord containment spool conveniently keeps cords from cluttering a workspace. Screw it onto either a vertical or horizontal surface, spool your cord, anchor the outgoing cord into one of the three notches in Sombrero's "brim" to prevent accidental unwinding -- and that pesky cord is out of your way! Stack one on top of another (just use a longer screw) to spool even more cords."

Available in Avocado Green, Aqua Blue, Pimento Red, Noche Grey, Media Noche.

Mounting screw included.
4" wide x 2" tall. (Thanks Marie!)