A prop is an object that adds impact to your speech. The purpose is to:
Emphasize your message, dramatize your point & help the audience to remember your message.
Add visual interest.
The right prop must be:
Appropriate to the message – must be relevant to the presentation’s theme.
Appropriate to the audience – consider the audience’s interests, experience, and sophistication.
Appropriate to the occasion – is it a formal awards dinner or a children’s party?
Enhancing, not overpowering, the message – make sure your point is remembered, not just your props.
Clearly visible – small audience, small prop; large audience, large prop.
Used with confidence – appear confident so that your audience will think you are confident.