Sometimes a visual element is the best way to make a point and it's simple to add a variety of them to a Google Doc file.

Want to add a picture, video, PDF, Pages document or other file to an email in Mail on the iPhone? Don’t worry: it’s easy. (We’ll be attaching the file to the email itself, which is suitable ...

You can upload a file on Google Forms, allowing you to add an image or video to supplement your questions. You can also allow respondents to upload their own files to your Google Form.