If you want to print your own, you'll need to print all three base_ pieces at a decent infill and whatever layer height you have the patience for. I did 35% at 0.3 layers.
For the cube you need 7 copies of cube_cell, and one of cube_base and cube_core. These should all be printed in a translucent or glow in the dark filament, and at a low infill if there will be LED lighting added. You will also need 4 copies of cube_pin, and 28 copies of cube_spacer.
If you want to do the electronics you'll also need led_mount, and the control panel with the switch openings. If you want to do a print without the electronics, use the blank control panel and just screw the cube right to the top of the base.