Glowing necklace (the coolest thing like totally ever)
thingiverse
When you link a power source (a 3-volt button cell) to an LED through a conductive thread or wire, the resulting light beam should shine brightly from within the diamond-shaped pendant. This setup produces its best results with white filament LEDs, as they don't distort the color of your chosen LED. P.S., adding RGB's is a great way to add some fun and excitement to the experience.
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