Abstract: The present disclosure includes an apparatus, including a frame having a front surface and a back surface. In some examples, the frame is configured to hold a card at the front surface. According to some examples, the frame is configured to release the card via a force from the back surface. The apparatus may include a slot configured to receive the force from the back surface during the release of the card.

Abstract: The present disclosure includes an apparatus, comprising a body. In some examples, the apparatus includes a gate rotatably coupled to the body, the gate including an arm, a middle portion, and a bend. According to some examples, the gate is configured to rest in an initial position. The gate may be configured to move from the initial position in response to a first force. In some examples, the arm moves a greater distance than the middle portion when the gate is moved from the initial position. According to some examples, a torque occurs in the bend when the gate is moved from the initial position.

Abstract: An example flexible cargo cover may be made of a foldable material; the example cargo cover may comprise: a first edge that is substantially straight; a second edge on an opposite side of the first edge; a third edge having a first concave; a fourth edge on an opposite side of the first edge and having a second concave; and a plurality of connectors. A first set of connectors in the plurality of connectors are installed on the third edge and a second set of connectors in the plurality of connectors are installed on the fourth edge.

Abstract: Example clippable multi-tone whistles, as well as systems and methods for manufacturing the same are described. An example clippable multi-tone whistle may comprise: a clip attached to a whistle body. The whistle body comprises a flat surface under the clip; a first opening configured to allow air flow to come into the whistle body; and on the flat surface a second opening configured to allow air flow to come out of the whistle body. The second opening is at least partially blocked by the clip, which controls direction of one or more air flows coming out of the second opening. The whistle part is configured to generate a plurality of different sound tones in accordance with user finger movements around the clip and the second opening. The whistle may further comprise a glass breaker, a length scale, and a bolt action switch, which may function as a fire starter.

Abstract: Example clippable multi-tone whistles, as well as systems and methods for manufacturing the same are described. An example clippable multi-tone whistle may comprise: a clip attached to a whistle body. The whistle body comprises a flat surface under the clip; a first opening configured to allow air flow to come into the whistle body; and on the flat surface a second opening configured to allow air flow to come out of the whistle body. The second opening is at least partially blocked by the clip, which controls direction of one or more air flows coming out of the second opening. The whistle part is configured to generate a plurality of different sound tones in accordance with user finger movements around the clip and the second opening. The whistle may further comprise a glass breaker, a length scale, and a bolt action switch, which may function as a fire starter.

Abstract: An example flexible cargo cover may be made of a foldable material; the example cargo cover may comprise: a first edge that is substantially straight; a second edge on an opposite side of the first edge; a third edge having a first concave; a fourth edge on an opposite side of the first edge and having a second concave; and a plurality of connectors. A first set of connectors in the plurality of connectors are installed on the third edge and a second set of connectors in the plurality of connectors are installed on the fourth edge.