My close friend is a big soccer fan - he played the sport, watched it religiously and even competed in soccer fantasy leagues. For his birthday one year, I ordered him a custom jersey of his favorite team along with his name and lucky number on the back. That very year, his team made it to the finals of the champions league. He wore his jersey to watch the game at a bar and he genuinely believes that the combination of the jersey and my presence there led to his team's victory in a nail-biting finish. Ever since then, whenever his team is playing in the finals he wears his jersey and asks me to watch the game alongside him. Looks like it actually worked as they won again 2 years later !!!