Michael Tapscott lists these things as the things that he contributes to his Berkley, California-via-the-Great-Midwest band Odawas as such: keyboards, guitars, vocals, harmonicas, dry skin, songs and songs. His partner in crime, and more appropriately, partner in composition, Isaac Edwards cites a similar, yet different list: keyboards, patience, ears, beards, sounds...
http://my.sxsw.com/events/event/7022