The Japanese have talismans and charms collectively known as omamori - literally meaning to protect the owner. When I was in grad school a Japanese friend game me a few small pieces of cloth with beautiful writing on them that were to protect me from illness, car crashes, financial woes and other problems. These went into a small bag - a omamori bukuro - that one was supposed to wear.
A physical kindness from a friend and, for someone who is a believer, perhaps something more powerful.
I haven't thought about this in years and have long since lost my omamori bukuro. Today I was chatting with another Japanese friend who was commenting on Japanese camera phone use. Apparently some Japanese take photos of friends or beautiful landscapes not with any intention of emailing or displaying them, but rather to just have them as talimen. The camera phone is now a omamori bukuro that goes with you everywhere.
I'm guessing the inventors of the camera phone didn't consider this.