A tennis stoke practice device comprises a tube comprising a first end, a second end and a hollow interior. The first end and the second end are operable for joining of accessories. A grip-bud is removably joinable to the first end. The grip-bud is configured to close the hollow interior at the first end. A grip is joined to the tube to abut the grip-bud. The grip-bud and grip comprise an octagonal shape. A movable insert is configured for projectile movement through the hollow interior in which, during a desired swing of the device, a longitudinal axis of the movable insert is substantially aligned with a longitudinal axis of the hollow interior. During an undesired swing of the device, the longitudinal axis of the movable insert rotates out of alignment with the longitudinal axis of the hollow interior.

An electromagnetic launcher with a curved or spiral-shaped, open-ended guideway and conductors for launching a projectile. The projectile, movably retained on or within the guideway, is accelerated along the guideway using electromagnetic forces until it reaches an end of the guideway, then the projectile is launched in a desired direction. The direction of the launch of the projectile is determined by orienting the guideway in the desired direction using an actuator.

The string launched flexible rolling wheel or Sling Wheel is used for recreational play. The Sling Wheel is a flexible, 5 to 10-inch diameter disc/wheel that has a deep slot in which to wind a length of string with a knot or a device with which to grip or otherwise attach to the finger(s) or hand. The end of the string without the knot or handle is wound in the slot a number of turns. After the string is wound, the user grasps the Sling Wheel between the thumb and index finger with the knot or handle end of the string generally secured between the third or fourth finger. The Sling wheel is then tossed in an underhand or overhand motion while keeping the string knot firmly grasped. The Sling Wheel spins away from the participant with a forward spin that gives it directional control and significant velocity. The string remains with the person launching the toy.

The string launched flexible rolling wheel or Sling Wheel is used for recreational play. The Sling Wheel is a flexible, 5 to 10-inch diameter disc/wheel that has a deep slot in which to wind a length of string with a knot or a device with which to grip or otherwise attach to the finger(s) or hand. The end of the string without the knot or handle is wound in the slot a number of turns. After the string is wound, the user grasps the Sling Wheel between the thumb and index finger with the knot or handle end of the string generally secured between the third or fourth finger. The Sling wheel is then tossed in an underhand or overhand motion while keeping the string knot firmly grasped. The Sling Wheel spins away from the participant with a forward spin that gives it directional control and significant velocity. The string remains with the person launching the toy.

An electromagnetic launcher with a curved or spiral-shaped, open-ended guideway and conductors for launching a projectile. The projectile, movably retained on or within the guideway, is accelerated along the guideway using electromagnetic forces until it reaches an end of the guideway, then the projectile is launched in a desired direction. The direction of the launch of the projectile is determined by orienting the guideway in the desired direction using an actuator.

An electromagnetic launcher with a curved or spiral-shaped, open-ended guideway and conductors for launching a projectile. The projectile, movably retained on or within the guideway, is accelerated along the guideway using electromagnetic forces until it reaches an end of the guideway, then the projectile is launched in a desired direction. The direction of the launch of the projectile is determined by orienting the guideway in the desired direction using an actuator.

A ball tossing device for use in playing a ball tossing game includes a rod, which is substantially rigid, a basket, which is attached to a front face of the rod proximate to an upper end of the rod, and a cup, which is positioned in the basket and which is attached to a bottom of the basket. The cup is sized complementarily to a portion of a ball to be used in a ball tossing game, allowing the portion of the ball to be inserted into and retained by the cup when the rod is substantially vertical. A rear sight is attached to and extends from the upper end of the rod. The rod can be grasped in a hand of a user, positioning the user to align the rear sight with a target and to launch the ball at the target by one or both of a flick of a wrist or an extension of a forearm of the user.

A ball tossing device for use in playing a ball tossing game includes a rod, which is substantially rigid, a basket, which is attached to a front face of the rod proximate to an upper end of the rod, and a cup, which is positioned in the basket and which is attached to a bottom of the basket. The cup is sized complementarily to a portion of a ball to be used in a ball tossing game, allowing the portion of the ball to be inserted into and retained by the cup when the rod is substantially vertical. A rear sight is attached to and extends from the upper end of the rod. The rod can be grasped in a hand of a user, positioning the user to align the rear sight with a target and to launch the ball at the target by one or both of a flick of a wrist or an extension of a forearm of the user.

A ball tossing device for use in playing a ball tossing game includes a rod, which is substantially rigid, a basket, which is attached to a front face of the rod proximate to an upper end of the rod, and a cup, which is positioned in the basket and which is attached to a bottom of the basket. The cup is sized complementarily to a portion of a ball to be used in a ball tossing game, allowing the portion of the ball to be inserted into and retained by the cup when the rod is substantially vertical. A rear sight is attached to and extends from the upper end of the rod. The rod can be grasped in a hand of a user, positioning the user to align the rear sight with a target and to launch the ball at the target by one or both of a flick of a wrist or an extension of a forearm of the user.

A ball tossing device for use in playing a ball tossing game includes a rod, which is substantially rigid, a basket, which is attached to a front face of the rod proximate to an upper end of the rod, and a cup, which is positioned in the basket and which is attached to a bottom of the basket. The cup is sized complementarily to a portion of a ball to be used in a ball tossing game, allowing the portion of the ball to be inserted into and retained by the cup when the rod is substantially vertical. A rear sight is attached to and extends from the upper end of the rod. The rod can be grasped in a hand of a user, positioning the user to align the rear sight with a target and to launch the ball at the target by one or both of a flick of a wrist or an extension of a forearm of the user.