Petite bathrooms often suffer from a lack of wall surface for hanging artwork. This means you have little room to personalize your space beyond a few accessories and wall color. But if you have a glass shower door instead of a shower curtain, you've got more space to work with. Make the most of it by using a heavy-duty adhesive or a suction cup hook to hang a painting, photograph, or other piece of framed artwork. Here, a painting hung on the shower door infuses this gray bathroom with color, pattern, and style.