In accordance with embodiments of the invention, a modular marble course system with universal connectors among the components which can be mounted upon a vertical surface, has a large number of attachments, and which utilizes a unilateral construction for among the tracks, is disclosed. In combination, the features of present embodiments may permit a user to build a large number of customized and modular marble courses on substantially any vertical surface, and across multiple vertical surfaces in different planes. The system may include a variety of linear and non-linear tracks, including tracks which span around corners, smoothly move from one vertical level to the next, and which can be rotated to move a marble upwards. The system may further include unique trick attachments such as cannons, catapults, rotating attachments which pivot about an axis, and other attachments.

Aspects of the present invention relate to an anti-fidgeting device. In an aspect, the anti-fidgeting device includes a head, or a first member, that is coupled to a writing instrument. The writing instrument extends at least partially through the first member. The anti-fidgeting device includes a body, or a second member, that is coupled to the writing instrument. The writing instrument extends at least partially through the second member. The anti-fidgeting device includes a spinning mechanism that is positioned at least partially between the first member and the second member. The writing instrument extends through the spinning mechanism. The spinning mechanism is rotatable around the writing instrument.

Aspects of the present invention relate to an anti-fidgeting device. In an aspect, the anti-fidgeting device includes a head, or a first member, that is coupled to a writing instrument. The writing instrument extends at least partially through the first member. The anti-fidgeting device includes a body, or a second member, that is coupled to the writing instrument. The writing instrument extends at least partially through the second member. The anti-fidgeting device includes a spinning mechanism that is positioned at least partially between the first member and the second member. The writing instrument extends through the spinning mechanism. The spinning mechanism is rotatable around the writing instrument.

Aspects of the present invention relate to an anti-fidgeting device. In an aspect, the anti-fidgeting device includes a head, or a first member, that is coupled to a writing instrument. The writing instrument extends at least partially through the first member. The anti-fidgeting device includes a body, or a second member, that is coupled to the writing instrument. The writing instrument extends at least partially through the second member. The anti-fidgeting device includes a spinning mechanism that is positioned at least partially between the first member and the second member. The writing instrument extends through the spinning mechanism. The spinning mechanism is rotatable around the writing instrument.

Aspects of the present invention relate to an anti-fidgeting device. In an aspect, the anti-fidgeting device includes a head, or a first member, that is coupled to a writing instrument. The writing instrument extends at least partially through the first member. The anti-fidgeting device includes a body, or a second member, that is coupled to the writing instrument. The writing instrument extends at least partially through the second member. The anti-fidgeting device includes a spinning mechanism that is positioned at least partially between the first member and the second member. The writing instrument extends through the spinning mechanism. The spinning mechanism is rotatable around the writing instrument.

In a robot, after a first value indicating acceleration in the up-and-down axis direction output from an acceleration sensor exceeds a certain threshold value, when any of the first value indicating the acceleration in the up-and-down axis direction, a second value indicating the acceleration in the front-and-back axis direction, and a third value indicating the acceleration in the left-and-right axis direction is determined to exhibit variation exceeding a certain width for a fixed period, the robot determines that a housing of the robot is being held by a user.

In a robot, after a first value indicating acceleration in the up-and-down axis direction output from an acceleration sensor exceeds a certain threshold value, when any of the first value indicating the acceleration in the up-and-down axis direction, a second value indicating the acceleration in the front-and-back axis direction, and a third value indicating the acceleration in the left-and-right axis direction is determined to exhibit variation exceeding a certain width for a fixed period, the robot determines that a housing of the robot is being held by a user.

A spinning toy includes a main body provided with blades, each of which can be provided with weight modules. The weight modules are provided with counter-weight members, of which the positions are adjustable. A bearing having an upper finger cover and a bottom finger cover is mounted in the center of the main body. By pinching the two finger covers via fingers, a user can hold the toy and suspend the main body between the fingers, and then slightly flick the blades with the other hand to enable the blades to spin; when the positions of the counter-weight members of the weight modules are adjusted, as the gravity center is no longer evenly distributed, the user can make the blades spin for a long time by swinging the toy in a proper rhythm.

A spinning toy includes a main body provided with blades, each of which can be provided with weight modules. The weight modules are provided with counter-weight members, of which the positions are adjustable. A bearing having an upper finger cover and a bottom finger cover is mounted in the center of the main body. By pinching the two finger covers via fingers, a user can hold the toy and suspend the main body between the fingers, and then slightly flick the blades with the other hand to enable the blades to spin; when the positions of the counter-weight members of the weight modules are adjusted, as the gravity center is no longer evenly distributed, the user can make the blades spin for a long time by swinging the toy in a proper rhythm.

An object spinner providing playful engagement between a threaded spindle and a spinning object providing a threaded hole to rotatably engage the threaded spindle is provided. The threaded portion of the spindle is angled to provide a moving distance along the spindle with a single rotation so that spinning object bearing the threaded hole is urges to move along the spindle with the urging of gravitational or other applied forces. A rolling element bearing using balls may maintain separation between the spinning object and a spinning nut providing the threaded hole.