Abstract: A foldable skateboard comprising a center deck, a front deck, and a rear deck, is provided. The foldable skateboard also comprises a pair of articulated pivot devices fixed between the center deck and each of the front and rear decks. The side edges of the front deck, center deck, and rear deck being mutually substantially co-aligned when each articulated pivot device is in a first extended position. The top surfaces of the front deck, center deck, and rear deck being mutually substantially coplanar when each articulated pivot device is in the first extended position. The top surfaces of the front and rear decks inverted with respect to the center deck when each articulated pivot device is in a collapsed position.

Abstract: A device for allowing a user to adjust drainage properties of a sink drain is disclosed, comprising an inner tube inserted into a stopper ring. The stopper ring is inserted into the drain such that liquids cannot enter the sink drain except by traversing the inner tube. An outer tube is fitted substantially completely around the inner tube. A selector slot of the outer tube may be aligned with a selected drain slot of the inner tube to allow draining of the sink down to a lower height of an exposed drain slot of the inner tube. A straining tube is adapted to fit loosely around the outer tube and has a plurality of straining apertures each no larger than a predetermined size. The apertures are formed along the entire length of the straining tube. With the straining tube placed around the outer tube, debris having a size larger than the predetermined size is prevented from flowing through the slots of the outer and inner tubes and into the sink drain.