What should you use as your visual aid for your informative speech on different meanings of tattoos?

If you wish to give an informative speech about tattoos, the most useful visual aid would be some means of showing your audience the tattoos which you are discussing. These could be shown in the form of photographs, or drawings, or projections on a screen. This may or may not be practical for you, but in theory you could even get people who have tattoos, to display their actual tattoos in person. Members of the audience may have tattoos that they would be willing to show to the other members of the audience. You could ask people to show their tattoos, and you could then offer your interpretation of what those tattoos seem to mean. You may also have tattoos of your own, which you could show and discuss. Perhaps you know someone who has interesting tattoos, who could be persuaded to come and join the presentation.