Take these steps:
Post “caption contests.” Encourage employees to create their own humor by pinning a magazine photo on a bulletin board near the copy machine and inviting staffers to write their own captions. Caution: There’s no company filter on these contests, so make sure your employees know that racial, sexual or religious jokes are off limits. If such a caption goes up anyway, take it down immediately.
Compose group poems. Ask a volunteer to bring in a poem from a published collection or a magazine (The New Yorker is a good source). Circulate the first few lines of the poem and have each employee make up a line— one at a time. When your team has finished its poem, read it aloud at a meeting.
Host a “star search.” Create a stage in your company cafeteria or conference room where volunteers can perform skits, magic or comedy routines at designated times, such as during lunch or on Friday afternoons. With a chance to ham it up, both the performer and audience will have a blast.