TheHappyHousewife.com has a great collection of almost 100 hands-on projects, crafts and experiments especially for homeschoolers, on all sorts of interesting topics, including:
Turkey Feather Science
Testing for Starch
Milk Fireworks
The Physics of the Trapeze
Fun Ways to Improve Writing Skills
Buoyancy Experiments
…and dozens more.
CLICK HERE Take a look and browse through the collection yourself!