In the case of incandescent bulbs there seem to be few projects using them, instead most mentions of them come from replacing them with LEDs in old projectors or other devices.

A newly developed white organic light-emitting diode operates at under 1.5 volts, report researchers from the Institute of Science Tokyo. By using triplet–triplet annihilation to generate blue ...

January 20, 2017 If you’re looking to control WS2812 (or Neopixel) LEDs using a microcontroller running at 3.3 volts, you might run into some issues.