I've been saving most of my box tops since shortly after starting this hobby. The artwork on them is nice and I figured I could do something with them sooner or later. Someone on reddit posted something similar a while back and gave me this idea. I didn't feel like working on my current project last night, so I made this instead.
Very cool, I've saved this! I'll do something similar when I eventually build all the Gunpla that I bought 3 years ago, yet to build any of them.