Abstract: An ice melting compositions are formed into balls or other shapes. These balls, when thrown, impact the ground and are configured to provide approximately four (4) feet of dispersion spread. The balls are formed by pressure, bonded with urea, brine, or water, or built on a lattice.

Abstract: A pointing device for a computer and a method of using the pointing device. The pointing device includes a base, a motion tracking device coupled to the base; and a body pivotably coupled to the base. The body pivots with respect to the base about at least one axis.

Abstract: An ergonomic keyboard that alleviates repetitive stress injuries by eliminating static repetition in the use of keyboards. The keyboard includes a plurality of key zones, the key zones being adapted to move. The zones are moved by moving means. The key zones move when any one or more of predetermined conditions occur such as a set time, number of keystrokes, time interval, keystrokes in a zone or area, preprogrammed injury status, preprogrammed injury prevention, programmed diagnosed condition, key temperature, keyboard vibration, manual adjustment, and user pattern or preference.

Abstract: A mouse having a housing having a first surface configured to mate with a user's hand and a second substantially planar surface opposite the first surface, at least one motion tracking element arranged at least partially within the housing; and at least one display element arranged at least partially within the housing. The display is configured to display an image representing at least a portion of an image available on a main display of a computer.