Not all grab bars look institutional. Models that wrap around the shower valve or pull double-duty as a towel bar look decorative but still make getting in and out of the tub a whole lot safer for visiting in-laws and kids. Do a dry shower run to figure out the most logical placement, and mark the hanging locations with strips of 1½-inch painter's tape. Use a stud finder to locate studs and mark the position on the tape. Drill pilot holes using a glass-and-tile bit, then screw the bar into the wall, making sure the screws penetrate the studs by at least 1 inch.