Gadget

Noun

 * 1) any device or machine, especially one whose name cannot be recalled. Often either clever or complicated.
 * 2)  a thing whose name cannot be remembered; thingamajig, doohickey

Adjectives for Gadget
life-saving; lethal; noise-making; educational.

Thesaurus
affair, apparatus, appliance, article, artifact, business, concern, contraption, contrivance, creation, device, dingus, dofunny, dohickey, dojigger, dojiggy, domajig, domajigger, doodad, dowhacky, eppes, etwas, flumadiddle, gigamaree, gimcrack, gimmick, gizmo, hand tool, hickey, hootenanny, hootmalalie, implement, instrument, invention, jigger, machine, material thing, means, mechanical device, mechanism, object, power tool, precision tool, quelque chose, something, speed tool, thing, thingum, thingumabob, thingumadad, thingumadoodle, thingumajig, thingumajigger, thingumaree, thingummy, tool, utensil, whatchy, widget