Quantity   Component name
1 × 3.2" 320x240 ILI9341 SPI display https://www.amazon.com/gp/product/B07KPD4DHD
1 × Teensy 4.1 with (1) 8MB PSRAM added https://www.pjrc.com/store/teensy41.html
1 × 18650 battery & charger https://www.amazon.com/gp/product/B0129F9BXK
3 × 10k ohm resistor
3 × 3.3k ohm resistor
1 × 0.1uF disc capacitor
64 × 6mmx6mm momentary pushbutton switches
1 × CR2032 battery holder Mouser p/n 534-101
1 × CR2032 battery
1 × 3-pin header for printer port (optional)
4 × M2.5 screws (for display)
1 × Micro SD card (I'm using a 16GB card, smallest that seems reasonable in 2020)
1 × custom PCB...
1 × 3.5mm headphone jack Mouser p/n SJ1-3524N
1 × USB A Female jack Mouser p/n UE27AC54100
1 × 3.3v linear regulator Mouser p/n LD1117V33
1 × 2n3904 PNP transistor Mouser p/n 2N3904-AP
1 × nts2101p P-channel MOSFET Mouser p/n nts2101pt1g
1 × 5v boost regulator https://www.amazon.com/KOOBOOK-Step-up-Voltage-Converter-Module/dp/B07TV9TGYD
1 × more headers, however you'd like to attach things...
1 × ESP8266 ESP-01 (optional, for *future* ethernet support)
1 × Parallax 27800 Joystick, 2-Axis, 1.64" x 1.2" x 1.1" Mouser p/n 619-27800
2 × Brass M2.5 Standoffs 16mm tall, 2 pk (need 4 standoffs total) https://www.adafruit.com/product/2337
2 × SPDT through-hole switch Mouser p/n 642-MMS1208
1 × speaker Mouser p/n AST-03032MR-R
1 × 18650 battery holder I bought this 2-pack - https://www.amazon.com/gp/product/B00FGX8NVO