The phrase "little whimsy" refers to a small and playful idea, often something creative or imaginative that brings joy or amusement. It can also suggest lightheartedness or fanciful notions. Full definition
In other words, don't be afraid of adding a little whimsy to your messaging, but be genuine about it. (entrepreneur.com)
(This is all fake, but a little whimsy never hurt anyone, okay?) (yummybeet.com)
With so many different ways to rock the trend this season, you should be able to incorporate a little whimsy into your fall wardrobe. (thefashionablehousewife.com)