This is a source for science kits (including individual kits for lab experiments), living and preserved specimens, multimedia, books, microscopes, apparatus, and much more. They carry just about anything you might want for science. Their website also has many lab experiments--some requiring serious lab equipment. While they work primary with traditional schools, they are also very homeschool friendly. Check out their homeschool section (link at bottom of home page) for recommended products. Check under "Teacher Resources" for free activity ideas.