The present disclosure provides a movable puzzle platform, the movable puzzle platform includes a puzzle board assembly including a puzzle board and a surrounding border wall, the puzzle board includes a top surface for placing a plurality of puzzle pieces thereon, the surrounding border wall is configured to surround edges of the top surface and protrude upward beyond the top surface, and the surrounding border wall is configured as an integral structure; the movable puzzle platform further includes a rotating assembly arranged on the rotating assembly, the puzzle board assembly is configured to self-rotate 360 degrees along with the rotation assembly.

A self-contained media presentation system comprising a crate having a frame mounted on a floor panel; a series of castor wheels by the floor panel; a wheel protection frame disposed around each castor wheel; a front panel, rear panel, a first side panel, a second side panel, and lid panel carried by the frame, wherein the lid is pivotally attached to the top of the frame and the rear panel is removable; a primary divider extending from the first side panel to the second side panel and defining a first storage area for storing at least a projector screen and stand; a pair of interior walls extend from the primary divider to the rear panel defining a projector storage area; and, a projector assembly removably carried in the projector storage area for cooperating with the projector screen when deployed from the first storage area to display visual media.

A multi-utility table that includes a first platform a substantially a rectangular shape and four vertical members positioned at four corners of the first platform, wherein each vertical member of the four vertical members has a channel and the first platform is slidably mounted to the channels of the four vertical members. Each vertical member has an upper end and a lower end. An actuating member is operably coupled to the first platform for moving the first platform up and down along the channels. A second platform is mounted to the four vertical members near the lower end and below the first platform. A compartment is mounted to the four vertical members near the upper end.

A reinforced multifunctional jigsaw puzzle tray is provided, including a tray body and a drawer disposed within the tray body. A reinforcement rib is correspondingly provided inside the tray body and at a bottom of the drawer, and a reinforcement structure is arranged around a periphery of the tray body. A circular recess for placing a turntable is provided on a lower surface of the tray body, and a magnetic attraction structure is arranged at a bottom of the circular recess. The turntable is connected to the tray body through the magnetic attraction structure. The present disclosure resolves the problem of insufficient structural strength of the jigsaw puzzle tray, which results in instability during use and limits functional expansion.

A height-adjustable desk includes: a desktop; a lifting assembly having two height-adjustable legs coupled to the desktop, wherein the two height-adjustable legs are to support the desktop; a storage cabinet defining at least one through-hole configured to permit passage of one of the two height-adjustable legs therethrough; and a rotational connection assembly including: a base securely within the at least one through-hole of the storage cabinet; and a rotating member rotatably coupled to the base, the rotating member defining a through-hole configured to permit passage of one of the two height-adjustable legs therethrough. The storage cabinet is rotatably connected to the one of the two height-adjustable legs via the rotational connection assembly.

Furniture such as desks and other items are provided with sound absorbing features consisting of micro-perforations extending through structures having vertical surfaces. The micro-perforations are formed using a LASER cutting tool or a punch and are either cylindrical or frustoconical. The micro-perforations are formed in drawer facings, doors, support structures, and free-standing objects and storage devices having vertical surfaces. The micro-perforations have diameters in the range of 0.20 to 0.70 mm. The micro-perforations have been found to increase sound absorption of a desk by as much as 4 Sabins within the frequency range of 100 to 5,000 Hz. Structural panels consisting of front and rear micro-perforated panels surrounding a porous central core may be employed in such furniture.