I do like to keep it classy.
When I started with my X1C about 6 months ago, I couldn't bear to just toss all of the poop. I consider myself a maker, but not much of a designer. So I started collecting the poops and making simple panels with them. Once I've saved enough, I put them on parchment/wax paper on a baking sheet in the oven at 400F for about 5-7 minutes. I use almost exclusively PLA, so I can't advise whether or not this would be as safe to do with fumes for other materials. Pro Tip!! - Use an old, trash baking sheet and not your wife's new expensive ones she got for Christmas.
I'm a middle school computer science teacher and we recently were able to purchase 2 X1Cs for my classroom as well. I showed this to the kids and we now have plans to cover my entire classroom's back wall with the panels over time as I print from 3 machines almost daily.
Being totatally objective, almost every other designer has made something better or more interesting for this contest. I love the poop canons, poop flowers, and all of the others. The problem I see is that the printed parts are great designs, but either use only a small quantity of filament waste or use it in a way that it isn't sustainable for continuous quantities over time. The main element of my entry isn't the design of the sign. Anybody could do that in minutes. It's that it uses all of the printer poop in the most quick and efficient way for large quantities. Anyone who uses a Bambu Lab printer knows that you're going to be producing a ton of it repeatedly. While this use isn't any revolutionary breakthrough, it makes use of every bit for a little modern art.