Fun With Physics

From site:  If you're looking for ideas for a science fair project or demonstration, these pages may help you find a topic that would be fun to explore. They also provide ideas for teachers who are looking for classroom demonstrations or hands-on, inquiry-based student exercises to expand their curriculum. I am an Emeritus US Geological Survey Geophysicist specializing in seismology and earthquake location programming...

The Physics section has some fun projects, such a instructions on levitating a magnet with the help of some diamagnetic carbon. There is also a link to the Magnitudes of Physics site with a huge table of interesting physical measurements.