Bad Human Factors Designs
http://baddesigns.com/
This website provides numerous examples of potentially useful items whose functionality is hindered by bad design.
Graphic Organizers
http://www.ncrel.org/sdrs/areas/issues/students/learning/lr1grorg.htm
http://www.graphic.org/class.html
These websites each contain a number of blank forms and flowcharts that can be used by instructors and students to organize various types of information.
The Noun Project
http://thenounproject.com/
This website is a collection of freely usable clipart intended to help “share, celebrate, and enhance the world’s visual language.”