 You can make a glowing 3D printed ornament with LED noodles from Adafruit. This snowflake ornament is 3D printed and features 4 strands of LED noodles. We think it's a festive light up project that's great for adorning your holiday decorations. It has a battery with a built-in switch so you can easily turn it off to preserve the batteries. It's conveniently secured to the back of the snowflake so you can quickly get to it. This battery holder houses two CR2032 coin cells and has a two-pan JST cable. An accompanying JST cable is wired to the noodles that are soldered together in parallel. The back cover has a slit for the wire to pass through and it snap fits over the snowflake. And because it has a JST cable, you can choose from an assortment of batteries. Get the files and instructions on how to build your own by heading over to learn.adafruit.com