Add-on for Hunters (or in my case, huntards): Trapper
This addon frees up the use of up to 5 buttons that will not be needed to place your hunter traps. You get a "bar" in the shape of a bear trap that has the five hunter trap buttons on it. The buttons configures itself depending on the rank of traps your character has and the number of traps. IE: A level 1 hunter will just have the bear trap image as you do not yet have any trap spells to cast.
Elvith (Worgen hunter on Nazgrel) is using it.