From Tar Valon Library
Stasis boxes are ter'angreal which can be used to store artifacts and extremely perishable items. Time ceased to pass for objects within the box once it was activated (TWoRJTWoT, Ch. 3). Both Graendal and Sammael find at least one containing items from the Age of Legends.
Finds a stasis box with streith (LoC, Ch. 23).