Depending on your topic, purpose, and audience, you may want to use different types of visual aids to illustrate your points. Some common types are graphs, charts, diagrams, images, videos, and slides. Each type has its own advantages and disadvantages, so you need to consider what information you want to convey, how much detail you need, and how familiar your audience is with the subject. For example, graphs and charts are good for showing trends, comparisons, and relationships, but they may be confusing or boring if they are too complex or irrelevant. Images and videos are good for evoking emotions, showing examples, and demonstrating processes, but they may be distracting or inappropriate if they are too flashy or unrelated. Slides are good for organizing your main points, providing visual cues, and reinforcing your key messages, but they may be dull or overwhelming if they are too text-heavy or cluttered.