White and grey items have been made transmoggable in Patch 10.0.5, and many items are now cosmetic — usable by any character regardless of class type. This includes both the Safety Goggles and the Spectrecles, two pairs of goggles that are obtainable through old quests. Note: If you've already done these quests on any character on your account, both these pairs of goggles should already be in your transmog library. Make sure to check first!
Safety GogglesThe Safety Goggles are a reward for completing the quest A Strange Request in the Badlands. To obtain these goggles, make your way to the town of Fuselight and speak with Dolph Blastus at /way #15 65.0 38.2. You will likely need to complete the single pre-requisite quest, Easily Swayed, first. Afterwards, Dolph will ask you to deliver a package to a Goblin named Rhea, who will give you the cosmetic Safety Goggles as a reward. Fun fact for the lore-curious: Rhea is actually a Red Dragon, and her questline eventually leads to the birth of Wrathion!
SpectreclesThe Spectrecles play a role in Burning Crusade quests in Shadowmoon Valley. Obtaining the cosmetic happens early on, the first time your character is asked to wear them for a quest. These goggles are particularly cool as beams of purple light shine out in front of them!
For Alliance, start with A Ghost in the Machine from Zorus the Judicator at /way #104 37.2 55.8. Once that's completed, you will be offered the quest Harbingers of Shadowmoon, and learn the Spectrecles cosmetic at the same time! For Horde, pick up A Haunted History from Chief Apothecary Hildagard at /way #104 29.8 27.6. This leads to the quest Spectrecles, and the cosmetic!For the lore curious, if you continue the questline you'll get a
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