gizmo
giz-mo
noun
A small, often novel or ingenious mechanical or electronic device.
"He loves buying new electronic gizmos for his flat."
Thesaurus
Synonyms: thingumajig, whatchamacallit, whatsis, thingummy, widget, dojigger, whatchamacallum, thingamabob, doodad, gubbins, doohickey, thingumabob