Concert tickets to popular shows can be good live auction items, even if though the tickets aren't "unique." It works best if the seats are excellent or if it's a sold-out show. Or even better, if it's both sold out *and* great seats. Taylor Swift (click through to see fundraising auction sales to her concerts), Adele, Billy Joel, Selena Gomez, Justin Timberlake, Luke Bryan, etc. are all strong sellers in 2016.