Provided is an energy harvesting device, comprising a first shell having a longitudinal axis, wherein the first shell defines a cavity, and a second shell, wherein the second shell is mechanically connected to the first shell via a flexible cord, wherein the cavity comprises therein a bearing, an electrical generator, and a battery, wherein the bearing is mechanically coupled to a rotor of the electrical generator at a first end and an end of the flexible cord at a second end, such that rotation of the flexible cord about the longitudinal axis rotates at least a portion of the bearing to generate electrical power, and wherein the rotor is in electrical communication with the battery, such that the battery stores at least a portion of the electrical power generated by the electrical generator.

A light source suitable for being thrown or projected into an airborne trajectory for the purpose of illuminating a subject or environment; and a throwable light source capable of receiving a signal over a wireless network in order to illuminate a subject in synchronization with a throwable camera on the network; and throwable light sources capable of receiving respective signals over a wireless network in order to illuminate a subject in synchronization with a throwable camera on the network.

A light source suitable for being thrown or projected into an airborne trajectory for the purpose of illuminating a subject or environment; and a throwable light source capable of receiving a signal over a wireless network in order to illuminate a subject in synchronization with a throwable camera on the network; and throwable light sources capable of receiving respective signals over a wireless network in order to illuminate a subject in synchronization with a throwable camera on the network.

An aerodynamic flying toy ball apparatus comprised of a plurality of semi-rigid uniformly shaped semicircular fins joined along, and equiangularly arranged radially around a longitudinal axis, balanced for aerodynamic gliding flight to create a stable 3-D ball shaped glider capable of gliding and maneuvering (climbing, turning and looping) as a gliding airplane. The apparatus resembles a ball and can roll on the ground. The apparatus can be made from a variety of lightweight materials.

A multipurpose rollable moving device is provided. The multipurpose rollable moving device includes: a spherical driving wheel; a driving device that is installed within the driving wheel in order to apply a torque to the spherical driving wheel; a docking portion that is installed within the spherical driving wheel to generate a magnetic force; and a mounting portion that may be attached to a surface of the spherical driving wheel by a magnetic force of the docking portion and that may mount an article. Therefore, the multipurpose rollable moving device can mount an article and easily stably move in an omnidirection on the ground.

A multipurpose rollable moving device is provided. The multipurpose rollable moving device includes: a spherical driving wheel; a driving device that is installed within the driving wheel in order to apply a torque to the spherical driving wheel; a docking portion that is installed within the spherical driving wheel to generate a magnetic force; and a mounting portion that may be attached to a surface of the spherical driving wheel by a magnetic force of the docking portion and that may mount an article. Therefore, the multipurpose rollable moving device can mount an article and easily stably move in an omnidirection on the ground.

A hollow, compressible or rigid hollow body has mechanical means of retaining devices such as sound generators, scent capsules, LED lights and vibrating mechanisms and identifying or responding detection elements held, secured and locked therein without the use of any solvents, glues, sonic welding, spin welding or other bonding materials. The hollow contaminant-free bodies are particularly useful for animals and recreation. Some of the above contain carcinogens harmful to animals if ingested.

A ball with a housing suitable for being thrown or projected into an airborne trajectory, the ball capable of deforming a portion of the exterior surface of the housing for the purpose of controlling the direction of its airborne trajectory. Also disclosed is a ball with a housing suitable for being thrown or projected into an airborne trajectory with means for shifting its center of mass away from the center of the housing for the purpose of controlling the direction of its airborne trajectory. A golf ball with one or more deformable dimples is also disclosed.

A ball with a housing suitable for being thrown or projected into an airborne trajectory, the ball capable of deforming a portion of the exterior surface of the housing for the purpose of controlling the direction of its airborne trajectory. Also disclosed is a ball with a housing suitable for being thrown or projected into an airborne trajectory with means for shifting its center of mass away from the center of the housing for the purpose of controlling the direction of its airborne trajectory. A golf ball with one or more deformable dimples is also disclosed.

The present invention relates to an unevenly weighted practice ball for sports (e.g., lacrosse) that, when used in training (e.g., in conjunction with a pitch back or rebounder), delivers the ball unpredictably to a player so that the player can improve their catching and reaction skills. Where the total weight of the practice ball is greater than that of a corresponding regulation ball, the player will also be benefitting from strength training.