Quantity   Component name
1 × UPDI Programmer <a target="_blank" rel="noopener noreferrer" href="https://www.adafruit.com/product/5879">https://www.adafruit.com/product/5879</a>
1 × LED MATTiny-rix Business Card <a target="_blank" rel="noopener noreferrer" href="https://www.instructables.com/LED-MATTiny-rix-Business-Card-With-the-HT16K33A/">https://www.instructables.com/LED-MATTiny-rix-Business-Card-With-the-HT16K33A/</a>
1 × BiColor LED Matrix <a target="_blank" rel="noopener noreferrer" href="https://www.adafruit.com/product/902">https://www.adafruit.com/product/902</a>
1 × 4 Buttons, 4 10kΩ Resistors
1 × ATtiny1616 <a target="_blank" rel="noopener noreferrer" href="https://www.adafruit.com/product/5690">https://www.adafruit.com/product/5690</a>