Web resource for visual aids
One challenge I give my students is that they are not allowed to use all-text visual aids for their speeches. There must be VISUAL elements like photos, diagrams, or charts if they are going to use slides (and this challenge is immediately followed by an explanation of the difference between a 75-minute class of students taking notes and a 6-minute speech of classmates who are not since their instructor is a frequent creator of the bullet list…).
This blog from JeffBullas.com features 20 different tools for creating infographics, including timelines, word pictures, interactive maps and charts. Each tool is briefly described for its best features.
Unless visual aids are a big part of your class, this probably would not take up class time, but would be a nice link to provide to students online or to have available to students who ask for help.