A market survey revealed that there are many kits available for discrete, thru-hole LED cubes in x4, x6, and x8 sizes. There aren't many kits for cubes larger than that. Most of these kits are inexpensive and include a pig-pile of thru-hole LEDs and instructions for you to use to solder it all together. Some kits include a base board to build the cube onto, and the base may or may not include a controller circuit to drive the LEDs. Thru-hole LEDs are cheap and all the expensive touch labor is performed by the purchaser. Some of the kits may include a separate controller board as well.

My quick market survey showed vastly fewer choices for addressable LED cube kits. These tended to be substantially more expensive and required little to no soldering skills from the purchaser. The ones I found also came with controller functionality built-in, and what I saw wasn’t how I envisioned controlling the LEDs.