Synonyms For "Gimmick" :

1 syllable:

catch, twist

2 syllables:

device, doodad, gismo, gizmo, gubbins, whatsis, widget

3 syllables:

doohickey, doojigger, thingmabob, thingmajig, thingummy

4 syllables:

thingamabob, thingamajig, thingumabob, thingumajig

5 syllables:

whatchamacallit, whatchamacallum