My raspberry pi 3 b box without air circulation, ready to hang on the wall.
For the led i use a resistor 47 Ohms 2% (ROX1G47R), I plugged it into the pin 1(3.3v PWR), and I plugged the ground into the pin 9(GND, but we don't care, as long as it's the ground).
For the power i use a Micro USB 5V 1A TP4056, and I plugged it into the pin 2(5V PWR, but we don't care, as long as it's a 5V), and I plugged the ground into the pin 39(GND)
If you wanted to make a wifi hotspot vpn the tuto in french is here: https://github.com/Clouard-Dista/vpn-hotspot-killswitch-raspberry
primer + black paint