Doodad informal noun
Used to indicate a name of gadget or item whose true name is unknown or has been forgotten.
A: Give me that doodad to fix my car. B: Here you go.
Is this the little doodad you lost, Mark?
I'm afraid that we can't afford to buy that doodad.
Used to to emphasize that attention is paid to the individuals who complain or cause problems
Sometimes, you shouldn't be so quiet because the squeaky wheel gets the grease.