Lost black Bluetooth headphones in a soft case with initials at a coffee shop in downtown Concord.

I misplaced my black Bluetooth headphones while visiting a coffee shop in downtown Concord, New Hampshire. They were in a soft case with my initials on it. I realized they were gone when I got home and can't seem to remember where I might have left them. I'd love to get them back, as they were a gift and have sentimental value.