A multi-purpose stand for computing devices is provided. The multi-purpose stand includes a first surface adapted for placement of a computing device, wherein the computing device is placed on the first surface and retained using one or more supporting means. The multi-purpose stand further includes a second surface having a front side and a back side, wherein the first surface is extended to form the second surface and wherein the front side of the second surface is used for writing and/or drawing by a user. The multi-purpose stand further includes a third surface, wherein the third surface is connected to the back side of the second surface and for supporting for the second surface.

A multi-purpose stand for computing devices is provided. The multi-purpose stand includes a first surface adapted for placement of a computing device, wherein the computing device is placed on the first surface and retained using one or more supporting means. The multi-purpose stand further includes a second surface having a front side and a back side, wherein the first surface is extended to form the second surface and wherein the front side of the second surface is used for writing and/or drawing by a user. The multi-purpose stand further includes a third surface, wherein the third surface is connected to the back side of the second surface and for supporting for the second surface.

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.

A drawing device with a rotatable display screen is provided, having a housing having a cavity therein and a display screen sealingly rotatably coupled to the housing. An inner surface of the display screen forms an enclosure with the cavity. A powder is contained within the enclosure, the powder being removably adherent to the inner surface of the display screen. A first stylus controller is supported on an exterior of the housing. At least one positioning structure is supported in the enclosure and coupled to the first stylus controller to move a first stylus in a first set of directions that are parallel to a first axis. The first stylus removes the powder from the inner surface of the display screen through contact with the inner surface of the display screen.

A drawing device with a rotatable display screen is provided, having a housing having a cavity therein and a display screen sealingly rotatably coupled to the housing. An inner surface of the display screen forms an enclosure with the cavity. A powder is contained within the enclosure, the powder being removably adherent to the inner surface of the display screen. A first stylus controller is supported on an exterior of the housing. At least one positioning structure is supported in the enclosure and coupled to the first stylus controller to move a first stylus in a first set of directions that are parallel to a first axis. The first stylus removes the powder from the inner surface of the display screen through contact with the inner surface of the display screen.

A method of reusing a notebook provides a notebook having a synthetic-paper page. The method also provides a thermochromic ink pen which, when used to write on the synthetic paper page, leaves thermochromic ink markings. The method further provides a moisture carrier configured to have a liquid diffused therein. The moisture carrier is configured to erase the thermochromic ink markings from the synthetic-paper page by contacting the thermochromic ink markings when the moisture carrier is moist. The method then writes with thermochromic ink on at least a portion of the synthetic-paper page. Liquid is diffused in the moisture carrier, and the portion of the synthetic-paper page having the thermochromic ink is wiped with the moist moisture carrier, such that the thermochromic ink is erased from the synthetic-paper page.

A method of reusing a notebook provides a notebook having a synthetic-paper page. The method also provides a thermochromic ink pen which, when used to write on the synthetic paper page, leaves thermochromic ink markings. The method further provides a moisture carrier configured to have a liquid diffused therein. The moisture carrier is configured to erase the thermochromic ink markings from the synthetic-paper page by contacting the thermochromic ink markings when the moisture carrier is moist. The method then writes with thermochromic ink on at least a portion of the synthetic-paper page. Liquid is diffused in the moisture carrier, and the portion of the synthetic-paper page having the thermochromic ink is wiped with the moist moisture carrier, such that the thermochromic ink is erased from the synthetic-paper page.

The present invention discloses a using method of a rewritable board. It comprises applying or removing a fluid on the rewritable board for writing repeatedly, wherein the rewritable board is an aluminum based material sequentially having a porous aluminum oxide layer and a metal layer thereon, and wherein the porous aluminum oxide layer has a porosity ranging from 10% to 80%.

A self-adhesive and reusable support for notes is disclosed. The support comprises a flat laminar body (1-1-1) that in turn comprises a first flat surface (10) and a second flat surface (11) opposite from the first surface. The flat laminar body comprises micro suction cups (3) distributed in a staggered pattern on the first flat surface and a writable surface (4) on the second surface. The self-adhesive and reusable support for notes is manufactured from opaque polymeric calendered vinyl. The support is reusable, meaning that it can be used as many times as desired, without the risk of losing the self-adhesive properties thereof even when the location thereof is constantly changed, as well as writing with marker or highlighter and erasing it again. Due to the nature thereof, it is especially suitable for use in the Kanban method.

A self-adhesive and reusable support for notes is disclosed. The support comprises a flat laminar body (1-1-1) that in turn comprises a first flat surface (10) and a second flat surface (11) opposite from the first surface. The flat laminar body comprises micro suction cups (3) distributed in a staggered pattern on the first flat surface and a writable surface (4) on the second surface. The self-adhesive and reusable support for notes is manufactured from opaque polymeric calendered vinyl. The support is reusable, meaning that it can be used as many times as desired, without the risk of losing the self-adhesive properties thereof even when the location thereof is constantly changed, as well as writing with marker or highlighter and erasing it again. Due to the nature thereof, it is especially suitable for use in the Kanban method.