Quantity   Component name
1 × CONN HEADER VERT 6POS 2.54MM https://www.digikey.com/en/products/detail/adam-tech/BHR-06-VUA/10414837
1 × SWITCH TACTILE SPST-NO 0.05A 12V https://www.digikey.com/en/products/detail/panasonic-electronic-components/EVQ-P7J01P/4429451
1 × SPEAKER 8OHM 700MW TOP PORT 90DB https://www.digikey.com/en/products/detail/same-sky-formerly-cui-devices/CMS-151103-088SP/10821316
1 × PAM8302 Single Channel Audio Amplifier Module Board D 2.5W Any mono amp circuit that can work with 3.3v should be fine. The input range is 2.5-5v for this one. https://www.amazon.com/dp/B0BG2F3LMP
1 × OLED Display Module 0.91inch I2C 128x32 SSD1306 Any I2C 128x32 SSD1306 compatible module should work. Just be sure to note the polarity on the power. The board allows you to set that.