I purchased a wood ring from
cnick® - Tesla Key Ring I must say their customer service was excellent. I went to a local jewelry store to measure my finger, and the size 11 test ring fit nicely. When the wider CNICK ring arrived, I found that it was uncomfortably tight. CNICK exchanged it at no cost for an 11.5 ring.
I basically never took that ring off for 9 months. Though checking their FAQ today, it does suggest not using it for weight lifting, I did. Not wearing it while washing dishes, I did. The finish on the edges of the ring had also become a bit worn, and refreshing the finish had been on my todo list for a few months.
I really liked that ring. I wore it on my right hand's ring finger, and just dropping my hand down would satisfy the MY's prompt to place a key card on the center console. It was also great for locking and unlocking the door when going kayaking. Not to mention saving me from pulling out my wallet to get the Tesla card whenever my phone didn't feel like connecting with the Tesla. I have since learned that Bluetooth signals will NOT pass through a human body, so don't expect a phone in your back pocket to unlock the car reliably.
If you have or are considering a key ring, you might also want to read
CNICK Tesla Ring wearers might be interested in this, especially if frustrated.