What is a synonym for the idiom icing on

There isn't a single perfect synonym for the idiom "icing on the cake," as it's a metaphorical phrase that implies something delightful and extra, adding to an already good situation. However, depending on the context, here are some alternatives:

Similar meaning, slightly different emphasis:

* Cherry on top

* Bonus

* Added perk

* Extra touch

* Pleasant surprise

* Something special

* The final touch

More formal synonyms:

* Enhancement

* Complementary element

* Culmination

* Apex

The best synonym will depend on the specific context and the level of formality you're aiming for.