gizmo

Noun	1.	gizmo - something whose name is either forgotten or not known Synonyms: dohickey, dojigger, doodad, doohickey, gimmick, gismo, gubbins, thingamabob, thingamajig, thingmabob, thingmajig, thingumabob, thingumajig, thingummy, hickey
	2.	gizmo - a device that is very useful for a particular job Synonyms: appliance, contraption, contrivance, gadget, widget, gismo, convenience

dohickey, dojigger, doodad, doohickey, gimmick, gismo, gubbins, hickey, stuff, sundries, sundry, thingamabob, thingamajig, thingmabob, thingmajig, thingumabob, thingumajig, thingummy, whatchamacallit, whatsis