Shoes. For me, I have to put on street shoes. Pants too, of course. It's all part of sticking to a routine that I would do if I was going to work in an office. I wear jeans and t-shirts rather than business causal, but I shower, shave, and dress like I'm going to an office.
Taking a walk is a great idea, especially for separating the end of the work day from personal time.
