Technical
Supplies:
-Printed parts
-2 3mm led's (The exact led doesn't matter, whatever you think looks best, I used green, because it is what I had around, You could use: https://www.sparkfun.com/products/11449, or really any standard size 3mm led)
-Micro DPDT switch (https://www.sparkfun.com/products/9609 or https://solarbotics.com/product/swt7/ )
-Hookup wire
-2x AAA battery holder
-2 AAA batteries
Tools:
-Soldering Iron
-Wire cutters/strippers
-Pliers, preferably small
-Hot glue gun
-Multimeter with continuity feature
-Helping hands (Not required, VERY helpful)