Amanda Seyfried
While on location for a film in London, Seyfried stumbled upon a shop that was selling a taxidermied horse. She purchased said horse for thousands of dollars, for what reason, we still do not know.
Bono
While a$1500 plane ticket might not seem crazy for a celebrity like Bono, the star didn't spend that money on a seat for himself, rather he spent it on a seat for his... hat. He was on tour and left a hat in London, and so naturally, he had to have it returned safely to him via a first class plane ticket.