2 or 3 years ago I was out scouting for goats with a buddy who won a limited entry hunt. I stopped at random and looked down to see a single piece of brass perched on a rock. It was of calibre 33 WCF, which looking it up when I got home has been discontinued since 1940 (
https://en.wikipedia.org/wiki/.33_Winchester). I took a picture and put it back for someone else to maybe find in the future (I doubt I could ever find it again if I tried). Take a look at the picture taken from where I found the brass amongst a field of boulders
I have to admit, it never occurred to me to place the empty case back where I found it. For me, it is a small reminder of a trip taken with good friends, in a very remote area that I will never revisit. Just like a set of antlers on my wall, when I look at the empty case, I am taken back to that time and place. So, I have no regrets in putting it in my pocket. However, a photograph would serve the same purpose so, in the future, I will put more thought into this.
Thanks for your comment.