Quantity   Component name
1 × Plastic bottle Any suitable plastic bottle. Preferrable with diffused semi-transparent plastic
1 × Arduino Pro Mini (ATMega328) Or any similar controller be able to drive WS2811/WS2812
4 × WS2812 LED Chainable and individually adressable RGB LED
1 × Li-Ion Charger / Step Up converter 5v - 3.7v converter and charger for Li-Ion battery
1 × Li-Ion battery 18650 or similar