 You can build a prop replica of Link's Ultra Hand from the Legend of Zelda, Tears of the Kingdom. We were inspired by Link's new ability to make a 3D printed prop that uses LED noodles. It's a two-piece wearable that fits over your arm and the palm of your hand. The LEDs wrap around the arm band to resemble the ability's effect like in the game. LED noodles are a flexible strand of tiny LEDs that can be powered by a 3V coin-cell battery. We made two different sizes to fit both human-sized hylians and smaller players alike. The arm band has three LED noodles powered by a 9V battery while the palm uses a single LED noodle powered by a coin-cell battery. The LED noodles are pretty bright compared to EL wire and it's even viewable during the day. Get the parts to build your own Ultra Hand from the Adafruit shop. We 3D printed the parts in copper PLA filament that looks great without having to do any post-processing. You can modify the open-source design in CAD for a precise fit. Just update the sketches to have the parametric model update so you can make an exact fitting prop. Start by soldering together the LED noodles in series with the cathode connecting to the anode. Be sure to check out the guide on the Adafruit learning system for a full step-by-step tutorial. This current limiting resistor is soldered to the ground wire of a JST connector for a plug-and-play assembly. The LED noodles are press-fitted into the built-in channels on the outside of the arm band. This joint was soldered at a right angle to accommodate the design of the channel. The wider channels allow the noodles to band on itself for a tight fit. Hot glue secures the JST cable to the inside of the arm band to keep it concealed. A separate mounting plate is secured with screws for the 9V battery holder. We'll need to replace this battery's DC jack with the JST cable so we can plug it into the wired LED noodles. Then we can place the battery holder onto the mount and snap-fit the cover over the holder to make it blend in with the prop. The battery holder features an on-off slide switch to power it on. The palm section only needs a single LED noodle with the ends fitting through the notch. Secure the coin-sealed battery mount and fit the battery holder into place with the snap-fit cover placed on top. Solder the battery cables to the noodles pins with an inline resistor. Remember to add heat shrink tubing to insulate those connections. Elastic straps or rubber bands can be used to keep the prop secure to your arm and your palm. Now you can use the slide switch to power it on. We had a lot of fun putting this one together and hope it inspires you to check out LED noodles for your next light-up prop.