Some mistakes I made

 I picked these up almost 5 years ago thinking I could resell them:

However, I found that they were nice looking imitations.

Why not decorate? Enter Blinkenlights / LED Matrices>>

To put these parts together I will follow:

Controlling an RGB 8x8 Matrix using multiplexers and a single MAX7219

KingBeetle1966
https://www.youtube.com/watch?v=4iFc3omSHCw

HUGE LED matrix with Arduino

Electronoobs
https://www.youtube.com/watch?v=v1vRjOU_pGA