Omamori Good Luck Charms
Omamori (お守り) are Japanese style good luck charms! When I travel to Japan, it's one of the things I always bring back, and it's something seen everywhere, people have them on their bags, attached to their zippers, on their keys, in their car, or just in their pocket. An omamori is a small woven pouch, with something inside, usually a prayer or an amulet. These have a small amount of dried lavender inside, for a pleasant, calming, scent, and they come in a small protective bag. They look really nice! (Yes, I am quite biased.) I can't claim what they will or won't bring you, but it's really nice having one around (I'm usually carrying a Twilight one myself).
The front has the cutiemark embroidered into it, and on the back is the Element of Harmony (for the mane six) or their name for other characters.