Quantity   Component name
1 × Adafruit METRO 328 Arduino https://www.adafruit.com/product/2488
1 × Adafruit Music Maker MP3 Shield https://www.adafruit.com/product/1790
1 × Speaker I used a 3 watt 4 ohm speaker from a cheap bluetooth speaker.
1 × Fisher Price World of Animals See N' Say
1 × Cable Short length of 4 conductor cable from your drawer of random lengths of wire. (I know you have one. Don't deny it.)
1 × USB micro B cable
1 × Salvaged button.