A Gibson Epiphone Les Paul guitar signed by Keith Richards, Steve Miller, Billy Gibbons and many others is being auctioned off on eBay with the proceeds going to St. Jude Children's Research Hospital. All the artists were part of Thank You Les, the Les Paul tribute album. Other signatures on the guitar include Jose Feliciano and Eddie Brigati from The Rascals. The auction ends on Sunday at 9 p.m. ET.