I would look for art that is large and squarish for just over the tub portion. Then i would find a shelf or two of some kind to go over the toilet. not an ugly cabinet, but something that will fill the space but not compete with the art. [Modern Bathroom[(https://www.houzz.com/photos/modern-bathroom-ideas-phbr1-bp~t_712~s_2105) by Winston-Salem Interior Designers & Decorators FOCAL POINT STYLING [Contemporary Bathroom[(https://www.houzz.com/photos/contemporary-bathroom-ideas-phbr1-bp~t_712~s_2103) by Vancouver General Contractors Hicks Fine Homes - (Hicks Interiors Inc.) [Contemporary Bathroom[(https://www.houzz.com/photos/contemporary-bathroom-ideas-phbr1-bp~t_712~s_2103) by Saskatoon Interior Designers & Decorators Atmosphere Interior Design Inc. [Modern Bathroom[(https://www.houzz.com/photos/modern-bathroom-ideas-phbr1-bp~t_712~s_2105) by Los Angeles Home Stagers Madison Modern Home [Contemporary Powder Room[(https://www.houzz.com/photos/contemporary-powder-room-ideas-phbr1-bp~t_713~s_2103) by Chicago Architects & Building Designers Robyn Shapiro Design

I love the art AuntThelma posted, too. It gives your dark walls a nod, while also bringing a splash of color. It brings a restful feel to the space above the resting bench and reflects the scene out the window. Your tall furniture piece is lovely, but it could only go in the space between the tub and the pony wall, right? If you need it for storage, then you should fit it in, but I like the feel of the room without it. I happen to have a few teal things saved. Though their ocean theme does not go with the picture, they might be useful if you did use the tall furniture piece. This octopus just makes me smile!

Any ideas for wall art, decor, trash can, etc for our newly added (was part of the living room) bathroom?

For the powder room: You could do a skirt for the sink and have storage bins behind it … Baskets or shelves above toilet: I think wallpaper would look great: