Quantity   Component name
1 × 4.2” eInk display 400 x 300, black & white raw display, https://www.waveshare.com/product/4.2inch-e-paper.htm
1 × Adafruit e-ink friend https://www.adafruit.com/product/4224
1 × Adafruit ItsyBitsy nRF58240 https://www.adafruit.com/product/4481
1 × 2032 battery holder Holder for 2 x 2032 coin cell batteries https://www.adafruit.com/product/783
2 × Tactile switches Snap dome, momentary switches