A re-useable writing surface reusably and removably coupled to exterior surfaces is disclosed. The re-useable writing surface may include a porous layer. The porous layer may define one or more cells. The re-usable writing surface may further include a non-adhesive coating applied to a side of the porous layer. The re-usable writing surface may further include a writeable layer coupled to a different side of the porous layer. The writeable layer may be configured to allow a user to draft and erase content. The non-adhesive coating can enable the re-useable writing surface to reusably and removably couple to exterior surfaces.

A phosphorescence and liquid toy comprising a pad having a first substrate and a second substrate wherein a first coating is applied to the first substrate. A second coating applied to the first coating and the first substrate wherein the second substrate is attached to the back side of the first substrate. The first coating having a liquid reactive material and the second coating having a phosphorescent reactive material. A pen having a cylindrical tube terminating in a tip on one end and opening on the other end creating a refillable reservoir wherein the reservoir is filled with liquid and a cap is removably attached to the opening.

According to an embodiment of the present invention, there is provided a magnet screen device, comprising a casing having an opening, a roll rotatably placed in the casing, and a magnet screen, the magnet screen being configured to be wound on the roll during a storage of the magnet screen and configured to be pulled out from the opening of the casing and to be attached to an installation surface upon an use of the magnet screen, wherein the magnet screen device further comprises a bar part at a region where the opening is provided, and wherein the bar part is configured to be capable of contacting the magnet screen at the region where the opening is provided.

A magnetic eraser can be used for erasing markings drawn on a magnetic sheet. The magnetic eraser includes a housing with a magnet placed in the housing. The magnetic eraser also includes a first magnetic body placed between a first surface of the housing and the magnet. The first surface of the housing can provide a first erasing surface.

Coating compositions useable to form markable-erasable coatings and surfaces on a wide range of substrates are disclosed. The coating compositions generally include a first silane monomer, and one or both of a second silane monomer and a metal oxide. The compositions may include 40-100 wt. % of the one or more silane monomers and up to 60 wt. % of the metal oxide based on the total solids weight in the coating composition, and an acid catalyst and a sufficient amount of water to form hydrolysates of the silane monomers. The first silane monomer may include a trialkoxy functional silane, and the second silane monomer may include a tetraalkoxy silane. The coating composition may be provided as a two-component system that does not cure to form a hardened coating until the two components are mixed. Articles coated with the coating, and methods of forming markable-erasable articles are also disclosed.

A magnetic erasing device including a magnet that includes an S pole and an N pole extending along an axial direction of the magnet, and a rotation mechanism for rotating the magnet in a housing around an axis of the magnet, wherein lines of magnetic force generated around the axis of the magnet during rotation of the magnet are designed to be applied to magnetic particles in the microcapsules to erase a visible image on a magnetic panel when the axis of the magnet is spaced from a surface of the magnetic panel by a predetermined distance.

An extendable dry-erase board with a telescoping hand-held support extension handle pivotally-connected at one end to an accordion-folding dry erase board. The device can be easily transported by those traveling via bus, bicycle, walking, etc. to any sporting event, concert, or public demonstration and deployed instantly on-site, the dry-erase board being unfolded into a large prominent sign whereupon a message can be inscribed on the board, erased and rewritten as needed.

An extendable dry-erase board with a telescoping hand-held support extension handle pivotally-connected at one end to an accordion-folding dry erase board. The device can be easily transported by those traveling via bus, bicycle, walking, etc. to any sporting event, concert, or public demonstration and deployed instantly on-site, the dry-erase board being unfolded into a large prominent sign whereupon a message can be inscribed on the board, erased and rewritten as needed.

The present disclosure generally relates to display systems, display devices, and methods of making and using them. Some exemplary display systems are capable of attaching a display device to a computer monitor. The exemplary display systems sought to create improved display systems and devices capable of displaying information to a user and attaching to a computer monitor and/or lagre format electronic display.

A mobile writing board system includes a frame extending from an upper portion to a lower portion; a writing board secured to the frame; a module secured to the lower portion of the frame; and a mobile device secured to the lower portion of the frame. The mobile device includes a housing; and a plurality of wheels configured to move within the housing while in a stationary position and configured to extend outside the housing during transit.