Abstract: An adjustable shelf system is disclosed having vertical left and right end panels, one or more center panels, top and bottom panels for holding the end panels and center panels in spaced relation and a back panel. A plurality of shelves may be adjustably positioned at various levels between the end panels and center panels. Each of the end panels and center panels is formed with support loops that are interlockably engaged by insertable tabs formed on the left and right sides of each shelf. Alignment tabs on each shelf side defined common left and right lower edges that guide the shelf into its proper position during assembly and subsequent re-positioning. The support loops on opposed vertical panels (e.g., the left end panel and the center panel) are structurally different and unique to the left and right sides of the shelf, respectively, so that the shelf can be insertably mounted in only a single orientation and at the proper depth within the shelf system.

Abstract: An apparatus for cutting wrapping paper is provided. The apparatus is adapted for use in association with a countertop, such as a surface of a workbench or the like. The apparatus includes a retention or retainer mechanism and a knife blade mechanism which are mounted in association with a feed slot in the countertop surface. Paper fed from a roll of paper stored underneath the countertop extends upwardly through the feed slot. The retention mechanism, preferably through means of a floating retainer member, pinches an extension of the paper against a wall of the feed slot, to prevent the paper from falling downwardly through the feed slot during apparatus use. The preferred retainer member comprises a circular rod maintained in an operable position by means of a ramp member. The preferred apparatus includes a hinged knife blade arrangement selectively orientable in a first, horizontal, storage position and a second, substantially vertical, cutting position.