Did you ever wish to be ignored by creepers during long build periods just by wearing a special armor? No ... Well you actually should because it's here now!
Just plonk a creeper skull onto your head and they will completely ignore you (well ... unless you punch them).
Just put the plugin JAR into your Bukkit plugins folder. That was it. There is currently no configuration needed.
Find/Give you a mob skull and put it into your helmet inventory slot (Currently supported are the following: Creeper, Skeleton, Zombie, Wither Skeleton).