Rick and Morty LED Torch Portal Gun Keyring

A fun little keyring modelled on Rick's portal gun from the cartoon series Rick and Morty.
3 LEDs are illuminated instantaneously when the button is pressed.

Electronic components needed:
3x 3mm green LEDs
1x 6x6x6mm push button microswitch
1x CR-2032 coin battery holder
1x CR-2032 coin battery
2x small wires
Solder

Soldering the circuit is tricky due to the small size. It's easiest to connect the wires to the microswitch and run them through the holes into the case. Solder the corr