Abstract: Devices, systems, and methods of the present disclosure are directed to providing a Science, Technology, Engineering, and Mathematics (STEM) based distributed games that allows two or more teams of players to develop mathematical and problem-solving skills. Game controllers allow each team to submit a number to a game device that performs one or more arithmetic operations on the set of numbers to compute a guess that is compared to a puzzle solution. If the guess equals the puzzle solution prior to a timer time period expiring, then the players win a reward, such as deploying a shower of confetti, providing candy, display of lights, conspicuous sounds, vibrations, and/or the like.

Abstract: A certified secondary market inventory platform maintains a certified catalog of items for sale on a secondary market. Certified items are tracked by the platform and have a verified chain of custody between the manufacturer and the current owner. The certified catalog of items is presented anonymously, such that current owners of certified items are not revealed to potential buyers. Anonymity also extends to fulfillment, with shipment of a certified item to a buyer being performed without revealing the buyer and the current owner to each other. Verification of the chain of custody may, for example, include evidence such as a goods-received note corresponding to a shipment of the certified item from the manufacturer to the current owner, or a shipping notification from the manufacturer. A physical audit may also be conducted in association with publication of the certified catalog of items, as a pre-requisite for such publication.

Abstract: The apparatus is a snap-on lid for JEDEC trays for surface mount components (SMCs) and other computer chips. The JEDEC trays hold the surface mount components and the lid snap fits over the JEDEC tray engaging the hold-down tabs thereof.