Halloween Ideas?

So I've been trying to find some inspiration as to what Brock is going to be for Halloween this year. I really want Halloween to be a family affair this year, where we all dress up. I was thinking punk rock stars. considering the hair style Brock has been sporting lately, but want some other ides to run by Ryszard to see what he would feel most comfortable dressing up as. Does anyone have any fun ides they would like to share with me?