That's a fantastic idea for a leftover item! Here is a focused and engaging description for the website to help you sell those shirts:
 
Limited Edition! 2025 Commemorative Mac N' Cheese Fest T-Shirt
 
Own a piece of history! Didn't make it to our inaugural Mac N' Cheese Fest in 2025, or just need a souvenir from the first year? We've found a small batch of our official 2025 Commemorative Event T-Shirts, and once they're gone, they're gone forever!
This high-quality, comfortable tee features the original 2025 festival design. It's the perfect way to remember where it all started before we got "Bigger, Better, and Cheesier" in 2026!
Year: 2025 (Original Festival Design)
Material: Soft, high-quality cotton blend
Style: Unisex fit
Stock: Extremely limited supply—grab yours before this piece of festival history is gone for good!