Using a Bluetooth Feather and a diffused NeoPixel strip, build a lightbox to aid in writing and tracing.
BleBox LightBox 3 - LED RGB Bluetooth driver - Botland - Robotic Shop
Overview Easy No-Soldering Bluetooth Controlled Room Lights
Overview, Bluetooth Controlled NeoPixel Lightbox
Bluetooth Neopixels - Sam Aparicio
Overview, Bluetooth Controlled NeoPixel Lightbox
Bluetooth Neopixels - Sam Aparicio
Overview, Adafruit Proximity Trinkey
Building Metro Control Box WiFi-Controlled NeoPixel Matrix LED
Overview, Make it Glow: NeoPixel and LED Diffusion Tips & Tricks
DARKPROOF LED Pixel Light WiFi Bluetooth IR Remote
Kyberlight Saber – Tatooine Lightsabers