Quantity   Component name
1 × Adafruit Feather RP2040
1 × Adafruit DS3231 Precision RTC breakout (You don't need the STEMMA version)
1 × Some kind of display. I'm using a 2" 320x240 TFT Display with ST7789 from Adafruit
1 × Lithium battery of some kind that works with the Feather
1 × 5 buttons