The Kin's Storeroom was located in the Rahad district of Ebou Dar.
For many years, perhaps for as long as the Kin have gathered, they collected any item which they perceived as related to the One Power and placed it in a storeroom in the Rahad.
After revealing the White Tower's knowledge of the Kin, the Knitting Circle is asked if they know of any ter'angreal in Ebou Dar. They then lead a delegation of Aes Sedai, including Elayne Trakand and Nynaeve al'Meara, along with Matrim Cauthon to their storeroom in the Rahad.
Much of what this room contained was junk, and was subsequently discarded. Among this junk however was some angreal and a large cache of ter'angreal, most notably of which was the Bowl of the Winds.
It was during this time that the gholam attacked, and it was discovered that Mat's foxhead medallion could cause harm to constructs.