A grab bar, attached at a strategic location on the bathroom or shower wall, can provide that critical support right where it is needed most.  These wall-mountable grab bars are available in a variety of styles, colors and lengths and can dramatically reduce the probability of falls while not dramatically affecting the appearance of the bathroom.  Although self-installation is straightforward, for optimum placement and reliability, you may want to have them installed by a professional handyman.  For a temporary solution, consider the suction cup grab bars that attach easily to smooth walls.