I've been planning on (eventually) putting a powder room in on the first floor of our house. It would have to be small and simple in order to fit into the mudroom behind the kitchen. I'll still need to save up to tile the kitchen and mudroom before we can start actually planning (I'm hoping to do a mosaic hex tile floor) but I've been starting to pull inspiration and materials for when the time comes!
I really love the idea of continuing tile up one wall - especially if I'm using hex tile on the floor it could be really cool to continue up the wall as a backsplash.
Using a slab of live edge wood for the vanity with a vessel sink - it would be especially easy to create a floating shelf in a small space like a powder room.
And a barn door to save floorspace!