" bells and whistles "

 [ "bells and whistles" ]

1: features that add to the appearance of something but do not make it function any better

  * e.g.,  ... If you want bells and whistles you should go to the other aisle. 

 [ "bells and whistles" ]

1: Features or extras to make something more unique and flavorful without necessarily adding to the utility of the primary function.

  * e.g.,  ... Look at all those gauges! These new Pontiacs come with ALL the bells and whistles! 

 [ "Bells and whistles" ]

1: Signature features.

  * e.g.,  ... The eighties single "One slip" has all the requisite bells and whistles of a classic Pink floyd tune. President Obama's speech held all the bells and whistles of that of a true statesman. 

 [ "belles and whistles" ]

1: "Fluff" perks of a job or outing dat include yer getting to lips-squealingly observe attractive chicks walking by.

  * e.g.,  ... I respect women far more than to give cat-calls, so I have zero craving for any belles and whistles.