Lost large green and blue plaid picnic blanket with a small coffee stain in Long Island.

I lost my favorite picnic blanket, which is green and blue plaid, while having a picnic in Long Island last weekend. I think it may have fallen out of my car when I packed up. There’s a small coffee stain on one corner, and it’s quite big, perfect for a family outing. I'm really hoping to get it back as it holds a lot of memories!