Abstract: A GPS arrow system to track a moving object. The GPS arrow system to track a moving object generally includes an arrowhead comprising a blade and an opening in the blade, a GPS tracking unit comprising a GPS attachment opening, and an attaching ring for attaching the GPS tracking unit to the arrowhead. The attaching ring comprises a gap that is expandable so that an end of the attaching ring can be passed through the opening in the arrowhead and the GPS attachment opening, for connecting the GPS tracking unit to the arrowhead. The arrowhead may be attached to the shaft of an arrow. The GPS tracking unit can transmit position signals that can be received by a handheld unit being carried by a user, such as a hunter, and used to track a moving object.

Abstract: A bioluminescent tornado maker system for creating a pleasing, glow-in-the-dark tornado. The bioluminescent tornado maker system generally includes a base that supports a transparent vessel having a liquid within it. The liquid may be salt water, and may contain bioluminescent organisms, such as dinoflagellates. An impeller in the base in contact with the liquid causes a rotational flow of the liquid, creating a visible vortex and also a mechanical disturbance that causes the bioluminescent organisms to emit a visible light, resulting in a glow-in-the-dark tornado.