An attachment comprised of a tip member, head and wand for attachment to an electric toothbrush for use as a sexual aid or muscular stimulation. The margin highlighter including a luminescent agent in sufficient concentration to provide a visible light emission in the event of lighting failure, the luminescent agent having a color in the range of about 500 to 650 nm. A cover lockingly snaps in place over the housing opening. The adjustable wrench further comprises a projection extending from the handle having a tunnel therein for accepting the lever arm of the L-shaped movable jaw and a grip enhancing apparatus. Such hopper sides have different tangential angles for all points on the surface and different rates of change of said angles per unit distance along the side, depending upon the conic segment selected.