Little hand-held ESP8266 based console with 240x320 LCD display, SDCard storage, 8 buttons and 2 sounders :) This includes an on-board programming circuit and USB serial port, so that it can be programmed easily using Arduino! Estimate around $12 in parts, including PCB, depending on PCB service and amount ordered - I used JLCPCB to buy 10.
I have recently received the PCBs back from JLCPCB for this design, and it works great!
Youtube video of older design here: https://www.youtube.com/watch?v=sWY_PZYmeA4
