Step 1: Production
Making the pendant is pretty streightforward: Each kid could write their name on the pendant in the svg file and chose a motive, which is then cutted out with the laser, motive and name are either engraved or marked. Thereafter, the backside protection foil is removed and a led inserted into the small hole.
The legs of the LED are then bend to reduce their length and a coin cell inserted into the big hole. A strip of transparent adhesive tape fixates the legs on the battery and guarantees contact.
A piece of string through the upper holes completes the pendant.
Done and Enjoy!