I have a plain silver one with a Tinkerbell, Dumbo, pair of shoes, a cat and a Rennie Mackintosh charm. I dont think I will add to it as they are quite evenly spaced out.
My Mum has a gold one which I used to like playing with; my Grandma travelled a lot when she retired so bought her charms on her trips. One I clearly remember was a Leaning Tower of Pisa and it really did lean. She also had one of a bible which had the Lord's Prayer in it (not that we were a deeply religious family)