bathroom signs - simple & fun! ***edited to include link to a/the etsy shop that sells them***
Great way to add concealed storage under a pedestal sink! The framed photos are great, too. :: GOOD IDEA: Try doing a gallery wall of photos in a bathroom. Adds texture. | #bathroom
shelves behind toilet - powder room
To add a little interest to plain walls add some 1"x4" boards as depicted, then paint everything.