I enjoy leathercraft as a hobby. I made a key ring using 2.5mm thick, firm cowhide leather. I cut it into 2cm wide strips and dyed it red. I used a 3cm outer diameter brass flat ring and brass snap fasteners. The leather has a good texture, and you can enjoy the aging process as you use it. It's a simple key ring that you won't get tired of. Thank you. Thank you for looking.