One easy way to upgrade your boring bathroom mirror is by adding wooden trim, which will. Web 1 / 10 courtesy @functional_decor/instagram diy arched bathroom mirror give your plain, frameless bathroom mirror a fabulous new look with this clever idea from @functional_decor. Check out these inspiring bathroom mirror ideas covering all shapes, sizes, and styles. Simply by changing the finish or color of a mirror frame, you can instantly transform and update a wall and room. Revamping mirrors is one of my favorite projects to do because you can really transform a dated mirror in very little time, effort and dollars.