Formal:
* The atmosphere at the conference was one of bonhomie and mutual respect, fostering productive discussions.
* Despite their political differences, the two leaders shared a surprising amount of bonhomie.
Informal:
* The party was filled with bonhomie, with everyone laughing and catching up.
* Our new neighbors are full of bonhomie, always inviting us over for barbecues.
Figurative:
* The author infused the novel with bonhomie, creating a warm and inviting world for the reader.
* The team's performance on the field was marked by bonhomie, which contributed to their success.
Remember that "bonhomie" is a noun and refers to a friendly, cheerful, and good-natured atmosphere.