Abstract: Among other things, a holder for an electronic stylus includes a cavity in which the stylus can be placed when not in use. The cavity includes a receptacle at one end for a writing end of the stylus and a stop at the other end. The stop has an opening into which an opposite end of the stylus can be placed. The receptacle has a resilient element to urge the stylus against the stop.

Abstract: A housing contains electronics used in determining locations of a writing instrument based on wireless signals, defines a chamber in which the writing instrument may be held when not in use, and includes a retention element to retain the writing instrument from falling out of the chamber. In general, in one aspect, a writing instrument includes an elongate pen body, an electrical contact on a surface of the pen body, and a light source disposed near an end of the pen body. The light source includes a light guide having an optically conductive portion and an optically reflective portion.

Abstract: A toothbrush comprised of a handle having a first section, a second section connected to and angled up from the first section, and a third section having a decreased width and thickness from the second section. The third section has a lip on its free end. The first section includes a device for mounting a length of dental floss thereon. The head of the toothbrush consists of a base with a substantially rectangular cross section which has an open end and a closed end. A ridge is located along the top or bottom inside face of the base. The base has a cavity which has a substantially rectangular cross section and contains toothpaste. Attached to the top of the base is a middle plate which extends beyond the base past a bottom end of the base. At the bottom end of the middle plate is a thumbstop attached to the top face of the middle plate at the first end. Attached to a top face of the middle plate is a bristle plate which contains bristles.