I've got a few: Unobtainium Precious Tritium Motes of the Traveler's Light Cosmic Ether Shards of an Ascendant Soul Queen's Echoes (in memory of the Awoken Queen) Etheric Coins (Strange coins bathed in the cosmic ether. Perhaps...they come from wherever Xur goes when he leaves the Tower...) Pieces of the Nine (Our wallets are not our own...)