When it comes to synonyms for "play of fancy," there are several phrases that come to mind. Some may interchangeably use the terms "flight of imagination," "whimsy," and "fanciful ideas." These expressions are often used to describe moments of creativity and inspired thoughts that may not necessarily have any real-life application. Similarly, phrases such as "daydreaming," "fantasy," and "pipe dream" can also be associated with this idea. Ultimately, whether one chooses to describe it as a "flight of fancy" or "play of imagination," the concept remains the same: a moment of lighthearted, creative thinking that allows us to explore new possibilities and ideas.