Abstract: A non-spillable portable cigarette ashtray has an ash receptacle open at its top, and a holder also having an open top and a flat bottom supporting the ashtray in an upright position. The ashtray is pivotally mounted to the holder and includes a weight which is effective, should the holder inadvertently be moved to a non-upright position, to cause the ash receptacle to pivot and to remain in an upright position, thereby preventing spilling out of the contents of the ash receptacle.

Abstract: A puzzle comprises a strip of flexible sheet material formed into a closed loop having twists to define two (or more) Moebius rings manually juxtapositionable with respect to each other. The strip is transparent and includes opaque markings which are viewable through the two rings of the transparent strip to define a predetermined pattern, representing a correct solution of the puzzle, only when the two Moebius rings are located in a predetermined juxtaposition with respect to each other.

Abstract: A container for containing a plurality of cigarettes, comprises a front wall panel, a rear wall panel, two side wall panels, and two end walls. One of the end walls, namely the bottom wall, is constituted of a pair of panels slitted and formed with fold lines such that they may be folded against each other to a closed condition to form the respective container end wall, or may be unfolded to an open condition and retained in the open condition to form an extension of the container to serve as an ashtray.