I have two lucky coins! The first one was a gift from someone who lived in my dorm freshman year. We were both having a hard time with these girls who lived on our floor who liked causing a lot of drama for everyone and one day he gave me his lucky coin because he felt I "needed it more" than him.
I keep it in my wallet. When I was in school I used to take it out and hold it during tests or presentations. I've even held it during job interviews
The second coin I don't know where it came from, but someone slipped it into my bag. It looks a lot like the first one so I guess one of my friends found it and thought it looked like my lucky coin and secretly gave it to me? Both are replica roman coins with "veni vidi vici" printed on them.