Hang some DIY crates on the area over the toilet to add some decor. The dried beach dahlias in tiny bubble vases, mason jars filled with candles & bath salts, some driftwood, and a few starfish & shells make your bathroom super fantastic.
DIY Wall Shelves of Used Drawers. I like this idea for repurposing drawers. Might be able to find an old dresser that has seen better days, with scuffs or crackers but that has interesting drawers, that I can pick up for cheap at a yard sale.