Mud room design with sliding barn door. I'm getting really excited for the mud room thing. And I like the sliding door even for use on a regular first floor room you want to casually close off occasionally.
Window seat with storage - good idea for the bay in the dining room. I can store all the table cloths, napkins, place mats, etc, there! Add cushions for seating in the meantime. In a old wood instead of white.