Quantity   Component name
1 × Espressif ESP32-D0WDQ6 https://www.esp32.com/
1 × Good Display GDEW075Z09 7.5" Red-White-Black E-Ink Display http://www.good-display.com/products_detail/productId=324.html
20 × 18650 Cell There are many manufacturers of 18650 batteries, but Panasonic is generally regarded as the best.
1 × 64 Mbit SPI (P)SRAM At the moment only Espressif's own ESP-PSRAM32 (which isn't big enough) is supported as external PSRAM, but the Microchip SST26WF064C looks promising.
1 × ANSI 104-Key Cherry MX Keycap Set https://www.amazon.com/dp/B01IBM8W9Y/
104 × Cherry MX Brown Keyswitch https://www.arrow.com/en/products/mx1a-g1dn/cherry-americas-llc