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.
"Aiming for a coastal bedroom decor? Paddles emphasize the sea/beach theme and make for great wall decorations. Different size paddles can also be arranged and used as a headboard in a coastal bedroom." Other headboard ideas at the link.
Nautical Decor Candle Holder w Nautical Rope and Starfish – via Etsy. [ez DIY can make: hurricane lamp or large votive candle holder (mason jar would work too)/med size candle/twine and starfish motif – use a hot glue gun to wrap the twine around the