Players who have been around since Burning Crusade have fond memories of a fellow named Vargoth. We've given a rundown of the man's history in an earlier post about his newfound status as a garrison follower in Warlords of Draenor, but where Vargoth is concerned, Warlords keeps giving.
Players clung to Vargoth's staff back in Burning Crusade to retain the ability to summon the mage to their side at any time. In Warlords, an updated version of that staff can be acquired via the rare follower mission Finding Farahlon. Successfully completing Finding Farahlon awards you with the Mysterious Shining Lockbox which contains Archmage Vargoth's Spare Staff. The Warlords version of the staff, which fits into your toy box, appears to use the same spell effects as the Burning Crusade version. Vargoth continues to talk about betrayal at the hands of Kael'thas despite those events being in the distant past by now. Regardless, there's no longer a need to carry a quest item in your bags in perpetuity.