All of these mementos are lovely, and I adore the stories behind them. I just want to say, the fact that you carry these special things with you, you have more opportunity to lose them. Just prepare and guard your heart in case you do.
When I was a teenager, I had a wallet that was filled with all these little wonderful teenage memories. Booth snapshots capturing moments in time with my friends, coins you could actually stamp with whatever you wanted (my coins had my name and the last name of all these boys I had crushes on, got it on a amusement park boardwalk on a trip with a friend and her family), ticket stubs from concerts, pictures of my one and only niece at the time who lived far away and lots and lots of other things -- simple teenage memories but at the time, they meant a lot to me. My wallet was stolen and needless to say, I lost all of these precious things. I cried and cried, I was so sad.
I have never carried anything that can't be replaced since. So, just saying, guard your heart just in case.