Houzz is the new way to design your home.
A boxy bookcase: add small pieces of wood to the backs of old frames, to create shelves. They used photo frame hooks on the back, I'm not sure how much weight these could hold though.
Doormat Wall Art: spray paint a door mat placed on a canvas or board(s)...
Firetruck | A Boy's Life by Martha O'Hara Interiors for the Hutchinson family in Minneapolis