For this project, I recycled two bits of pixel strip leftover from my old POV bike project tutorial. These are APA102s or DotStars, but you could totally use Neopixels for this project, I just happened to have this set of two strips wired in parallel, which is perfect for sticking under my scooter. The circuit is affixed to the scooter using strong magnets. Full tutorial on Instructables: https://www.instructables.com/id/How-to-Install-LEDs-Under-a-Scooter-with-Bluetooth/