Quantity   Component name
1 × raspberry pi-zero crafted out of unobtainium...
1 × 2.2" spi display (ILI9340) https://www.adafruit.com/products/1480
1 × powerboost 500 charger https://www.adafruit.com/products/1944
1 × alps navigator switch http://www.alps.com/prod/info/E/HTML/MultiControl/Switch/SKRH/SKRHAAE010.html
4 × small and soft tactile buttons for ABXY Omron Electronics D2LS-21
2 × micro switches for the shoulder buttons Omron Electronics D2FS-F-N-T
1 × LiPo battery 1200mAh https://www.adafruit.com/product/258
1 × many more smaller parts - see the attached BOM :-)