13 possible answers to
Answers with 4 characters: ITEM Answers with 5 characters: GISMO GIZMO THING Answers with 6 characters: DOODAD GADGET DINGUS Answers with 7 characters: WHATSIS WHATSIT Answers with 9 characters: THINGUMMY Answers with 11 characters: THINGAMABOB THINGAMAJIG THINGUMABOB