"Traffic Light" necklace

thingiverse

That's a necklace resembling a traffic light. To make the most of it, simply insert LEDs into the holes. You'll find space for four: two red and one each yellow and green. At the bottom, there's a hole for a switch that controls all four LEDs. The necklace runs on two AAA batteries, which have some extra room for springs. A tailgate closes off the traffic light part at the top, while a catch at the top lets you attach it to a neck chain. You can use your necklace in several ways: 1. Express your emotions through color: - Up red and down red indicate strong negative feelings. - Down red suggests negative emotions. - Down red and yellow signify slightly negative emotions. - Yellow indicates neutral feelings. - Yellow and green convey a bit of positivity. - Green shows positive emotions. 2. Simply turn on the LEDs that look best to you.