Transparent Case

Tic Tac is one of easy accessible transparent sweet box. But beware it have many size, especially you bought it in different seasons and countries. Some can fit a 2.2 inch LCD and some bigger one can fit a 2.4 inch LCD with break out board.

LCD Display

Any ili9341 LCD that can fit in the sweet box should be ok, I am using TM022HDH26 this time.

Battery

Any LiPo battery a little bit smaller that the LCD should be ok. In my measure, this circuit sometime may draw over 200 mA. In order to keep the circuit not draw over 1C current from the battery, it is recommended to choose a battery over 200 mAh.

Charge Board

Any micro USB LiPo charge board that can compatible with your battery.

ESP Board

Any ESP8266 board with SPI pin out should be ok, I am using ESP-12 this time.

3V3 regulator

I am using HT7333-A. (AMS1117 is not recommended, it draws too much power while standby)

PNP transistor

Any normal PNP transistor, I have some SS8550 in hand.

Others

3 x 10k resistors, a 470 uf capacitor, a 100 nf capacitor, a button for reset the ESP board, some wire for connection and a key ring for hanging this on your bag.