Abstract: A reusable plastic container for delivery products, such as a dairy crate, a bakery tray, a beverage crate or a produce tray, is formed of a composition including a plastic resin and an electrically conductive or magnetic material distributed substantially uniformly throughout the plastic resin. The electrically conductive or magnetic material can be carbonyl iron powder in an amount between about 0.25% and about 2.0% of the composition by weight. The powder is distributed throughout the container and is detectable by an electromagnetic detection apparatus for screening plastic materials for regrinding. The container has a notice affixed to it, which indicates that the container includes the electrically conductive or magnetic material and that discourages regrinding of the container.

Abstract: A system for collecting vacuumed lawn debris in a collector unit is provided. The system includes a collection bin for receipt in the collector unit and a material flap hinged to the collection bin at an opening. The material flap is normally biased in a first direction away from the opening so that the material flap remains in contact with the collector unit when the collection bin is received in the collector unit.

Abstract: The collector bag is provided that includes a fabric formed to define an internal volume, a plurality of sewn loops for disposal about an outer periphery of the collector frame, and a gather of fabric at each of the plurality of sewn loops for disposal about an inner circumference of the collector frame. The plurality of sewn loops are secured to the gather so that the internal volume of the collector bag, when disposed on the collector frame, is at least about 90 percent of a maximum volume of the collector frame.

Abstract: A collector unit for soil and lawn debris is provided. The collector unit includes a collector frame and a collector bag, which has fabric walls and is supported by the collector frame. The collector frame has a front end and a back end, where the back end is wider than the front end.

Abstract: The present invention provides a magnetic building game having substantially planar game pieces. Each piece has a plurality of magnets disposed at separate locations on a perimeter of the piece. Pieces are not coupled directly to each other, but are coupled using magnetically receptive connectors.

Abstract: An electronic educational game comprising a learning aid that is adapted to receive and identify a lesson card, and to subsequently accept user input and provide responses to such inputs where the responses provided are at least partially determined by the identity of the lesson card, where such identity is determined by using an optical code reader that is part of the learning aid to read a plurality of optical code strips on the lesson card.