100x8mm (2+6 hybrid) cell with rgb strand wrapped around it. Cell is resting on cardboard disk covered by black construction paper. Above is a cardboard cylinder lined with black construction paper. Bottom and top piece are held together by 2 pieces of electrical tape (fancy, I know). Top cover is a piece of foil with black construction paper inside (I don't want light reflected inside). For best human view a small hole is used by putting a pin in the foil and moving it around a bit, the camera setup uses a pen sized hole.