Alliteration is a stylistic device whereby a series of words begin with the same consonant sound, which can help your audience's listening.
Anthesis adds stylistic texture to your speech through the presentation of contrasting ideas and an opposite point of view.
Hyperbole is the use of exaggeration or overstatement to get your point across to your audience.
Onomatopoeia is a stylistic choice to represent sound within words and can be used as an attention-getting device in your speech.
Personification can refer to speaking as another person or thing, or assigning human qualities to a non-human animal, object or idea.
Repetition and parallelism can add clarity and dramatic punch to your speech.
Simile and metaphor are creative ways of making comparisons in your speech.