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Replying to @josecastillo

Button / Buzzer wing. Note that this is a bare PCB, but all the parts you need are inexpensive and readily available from Adafruit. The price: $4.95, same as a FeatherWing Proto. https://www.tindie.com/products/joeycastillo/button-buzzer-featherwing-bare-pcb/

(original)