Quantity   Component name
1 × Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A https://amzn.to/3xC0yRF
1 × I2S MEMS Microphone Breakout Bord https://www.tindie.com/products/21519/ or https://amzn.to/3e2oIgy
1 × Generic 4ohm or 8ohm speaker https://amzn.to/3xzRkp2
1 × Generic ESP32 Dev Board TinyPico: https://amzn.to/3e525YR or Generic Dev Board https://amzn.to/3eDF3Hw
1 × Push button switch Optional - you can use the built in switch on your dev board