Disclosed are: a caster mounted on a teaching aid including a whiteboard, or furniture, etc. so as to conveniently and stably convert between a movement state and a stopping state; and a whiteboard including the caster. The caster is mounted on a pedestal fixed to the lower end of a column frame on which the whiteboard is mounted.

Disclosed are: a caster mounted on a teaching aid including a whiteboard, or furniture, etc. so as to conveniently and stably convert between a movement state and a stopping state; and a whiteboard including the caster. The caster is mounted on a pedestal fixed to the lower end of a column frame on which the whiteboard is mounted.

A wearable writing surface system having a wearable writing surface assembly including a writing surface having, a front-surface, a back-surface, a first attachment loop, and a second attachment loop, and a band. As designed, the band wraps about the wrist of the user-wearer such that, as configured, the user-wearer is able to write on the front-surface of the writing surface for on-the-job convenient use, the back-surface adjacent and contacting the wrist of the user-wearer.

A magnetic erasing device includes a rotating member provided in an internal space of a cylindrical housing, a first magnet and a second magnet attached to the rotating member, and a motor for driving the rotating member. The first magnet is arranged so that the S pole is exposed and the second magnet is attached so that the N pole is exposed. By rotating the rotating member, the magnetic field generated by the first and second magnets is changed.

Described herein are examples of notebooks with removable components, comprising a front cover, a back cover, binding, and internal pages. The front cover and back cover are prepared from rigid or semi-rigid materials. The front cover comprises personalization space, and the front cover or back cover comprises a removable component. The removable component is separated from the front cover or back cover by an exterior edge and connected to the back cover by tabs. The exterior edge and tabs form a continuous perimeter around the removable component. The tabs are configured to be broken using average human finger strength allowing the removable component to be fully separated from the back cover.

Described herein are examples of notebooks with removable components, comprising a front cover, a back cover, binding, and internal pages. The front cover and back cover are prepared from rigid or semi-rigid materials. The front cover comprises personalization space, and the front cover or back cover comprises a removable component. The removable component is separated from the front cover or back cover by an exterior edge and connected to the back cover by tabs. The exterior edge and tabs form a continuous perimeter around the removable component. The tabs are configured to be broken using average human finger strength allowing the removable component to be fully separated from the back cover.

A magnetic pen can be used with a magnetic panel. The magnetic pen includes a body with an end portion. A holder made of a magnetic material is attached to the end portion and an internal space is formed in the holder. A magnet having an S pole and an N pole is arranged in the internal space of the holder so that the S pole and the N pole are opposite the magnetic panel.

An article of apparel comprising an upper body garment, the garment having a body, the body having a lower opening and an upper opening wherein the lower opening providing access for a human upper body to enter within the upper body garment, the upper opening being narrower than the lower body, wherein the upper opening allowing only the head to protrude out of the upper body garment, the upper body garment having an outer surface and an inner surface, the outer surface forming the exterior of the upper body garment, the inner surface making contact with the human body when worn, the inner surface having a front and a rear surface, the rear outer surface; and a prayer, spiritual or religious message printed on the outside back of the upper body garment, wherein the prayer, spiritual or religious message is printed in an orientation that can be read from left to right.

An article of apparel comprising an upper body garment, the garment having a body, the body having a lower opening and an upper opening wherein the lower opening providing access for a human upper body to enter within the upper body garment, the upper opening being narrower than the lower body, wherein the upper opening allowing only the head to protrude out of the upper body garment, the upper body garment having an outer surface and an inner surface, the outer surface forming the exterior of the upper body garment, the inner surface making contact with the human body when worn, the inner surface having a front and a rear surface, the rear outer surface; and a prayer, spiritual or religious message printed on the outside back of the upper body garment, wherein the prayer, spiritual or religious message is printed in an orientation that can be read from left to right.

Articles comprising a coating of hydrophilic silane. Also, methods for making such articles and methods for using such articles.