Neil Armstrong's LM PPK contained a piece of wood from the Wright brothers' 1903 Wright Flyer's remaining propeller in addition to a bit of material from its wing,[81] in addition to a diamond-studded astronaut pin at first presented to Slayton through the widows from the Apollo 1 crew. The https://ambiq.com/events/developing-ultra-low-power-audio-applications-on-the-apollo5-series/