"What makes the mirror interesting to a potential investigator are all the gizmos and doohickeys attached to it." He waved an arm at the arcane addenda. "Clear those away and move the mirror somewhere innocuous, and it's part of the scenery." His eyes narrowed. "Without them the mirror won't work as a portal for another . . . six months or so, if I remember correctly. With luck, nobody would notice anything unusual for the three days the portal would be open. Then it would close for another twenty-nine months."