So you are looking to build your own custom helmet? Adafruit’s latest project shows you how to build a SpaceX helmet with NeoPixels. It is 3D printed in several pieces and has NeoPixel LEDs to illuminate your face. It also features motion activated animations that you can easily customize.
This SpaceX helmet is powered by a Circuit Playground Express. You can always use CircuitPython, Makecode or Arduino to take this to the next level.