Important Bits:

• Pro Trinket 3V
• Pro Trinket Charging Backpack
• Neopixel Jewel
• 150mAh LiPo battery
• Hollow necklace pendant (at least 1.5" x 2")
• Magnetic necklace clasp (I like this one)

Tools & Other Stuff

• Soldering iron, solder & accessories
• Light-colored polymer clay (I used glow-in-the-dark Sculpey)
• Black 26AWG Silicone stranded wire
• Solid core wire in various colors (you just need a tiny bit but it's good to have on hand)
• Elecrical tape
• Hot glue gun
• Oven