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Not only will the winning bidder receive the Takamine GB-7C acoustic guitar, which Garth designed himself, Garth will autograph the guitar and personalize it with the winner's name.
This is the fifth year that Garth has donated an item to the auction, and he's joined by several other country artists this year. Tim McGraw has donated an autographed acoustic guitar and Dierks Bentley has given a Fan Pack with an autographed copy of his latest album, Home, and several other pieces of merchandise.
Steve Earle and Brandi Carlile have donated concert tickets and a meet-and-greet passes. Among the other artists donating experiences and collectibles are Katy Perry, Norah Jones, Foo Fighters, Heart, Elton John and One Direction. See a full list of auction items here.
The auction ends May 19, with all proceeds going to the Liberty Hill Foundation, which partners with innovative Los Angeles grassroots organizations working for social and environmental change.