LEDs, WS2812 LED strips and Neopixel strips, boards
Fiber Optic Fabric - Black is more of an illuminating fibre that can hep in your wearables project.
Flexible 8x32 NeoPixel RGB LED Matrix is a malleable with 256 inbuilt LED's.
WS2812B/WS2811 Addressable RGB LED controller gives you the option to manipulate the light patterns.
WS2812B RGB Addressable LED Strip comes in a lenth of 1m and contains 30 LED's
FadeCandy - Dithering USB-Controlled Driver for NeoPixels
WS2812B RGB Addressable LED Strip are highly advanced programmable LED strips
LilyPad Rainbow LED Panel comes with an array LED'S in rainbow colours
Adafruit NeoPixel Shield is designed for Arduino with 40 LED'S in a 5x8 matrix.