Z-Ring Pokémon USUM
Z-Ring from Pokemon Ultra-Sun and Ultra-Moon.
Last summer I was re-playing the Gen 7's games and I really wanted to make a Z-Ring bracelet. The crystals can be casted/printed out of resin but then you'll need to draw the specific symbol. All the link you'll need (depending on the size of your wrist) can be connected by using a small alluminium wire. All the pieces can be printed even on smaller 3D printers.