Bono bought a $1,500 plane ticket for his hat.

Flying to Italy for a charity concert in 2003, Bono forgot his favorite hat in London. So he arranged for it to be ferried to him immediately, paying for a plane ticket, cab rides, insurance, and tips.

"It was tricky telling the drivers and British Airways what he was after, but it all worked out," a source close to Bono told Contact Music.