Future Kanye lyrics: "Gave a skull to Jay first; this year he gave me Dame Hirst's. / Don't forget 'I Am A God;' now I own 'For the Love of God.'"
Approximate price: $100 million, White Cube Gallery London

Kanye wished Jay-Z a happy father's day last year by gifting him with a $34,000 golden skull. Now that the tables have turned, it's fitting that Hova return the favor by purchasing Damien Hirst's "For the Love of God," a 2007 piece consisting of a human skull encrusted with 8,601 high-quality diamonds. The asking price? $100 million... roughly 1/5 of Jay-Z's net worth.