Here are some examples:
* Peter Piper picked a peck of pickled peppers. (Repetition of the "p" sound)
* The silken sad uncertain rustling of each purple curtain. (Repetition of the "s" sound)
* The wild and woolly walrus wandered. (Repetition of the "w" sound)
Consonance is a literary device that can create a sense of rhythm, emphasis, and even a particular mood. It's often used in poetry and prose to enhance the overall effect of the language.