Thingy
Else clues• Contraption
• Contraption thingy
• Doodad
• Doohickey
• Doohickey: Var.
• Gadget
• Gadget for smog, I gather
• Gadget: Var.
• Gremlins pet
• Novelty: Var.
• Thingamabob
• Thingamabob (Var.)
• Thingamajig
• Thingamajig (Var.)
• Thingamajig's other spelling
• Whatchamacallit
• Whatchamacallit: Var.
• Something whose name is either forgotten or not known
• A device that very useful for a particular job