What will your kids (or you!) be for Halloween?

The school where I am interning this year is having a Halloween party on Friday, the day of Halloween and the kids will be allowed to dress up. It does not seem like teachers would be restricted on dressing up so me and a few other teachers are thinking about dressing up. However we have NO idea what we want to dress up as. And these are little, little kids so we don't want to dress up as anything scary or anything like that.