3D LED Cube
8x8x8 blue LED bube
Took around 40 hours to install.
Materials:
https://www.tindie.com/products/Nick64/jollicube-8x8x8-led-cube-spi-diy-kit/
Installation:
https://www.instructables.com/JolliCube-an-8x8x8-LED-Cube-SPI/
Arduino:
https://www.arduino.cc/