I work in Accounting for a manufacturing facility. We are allowed to each year, and even have a contest for those that do. However, I have only dressed up once. At the time there was three ladies in our department and we each wore a gray sweatshirt, black sunglasses, a walking cane, a tail, ears, and walked in to "Three Blind Mice" playing on one of our phones. Pretty sure we didn't even remain in costume all day. It was fun for that year but none of us have opted to do it again.