For whatever reason I've got it in my head that it might be interesting to design an enamel pin that doubles as a USB drive. It could have bare USB-A and C -sized connectors built into the design, and a circuit board either on the back or internally. So you could plug it into a USB-A port or into a f-f USB-C cable and have it deliver a payload to the target device, and then pin it back to your jacket and walk away.