TONS of (free) 1-3 minute Engaging Math & Science Videos for Kids via @Andrew Mager Vanden Heuvel! My kids LOVED seeing Google Glass - the video clips are free for everyone ~ can't wait to share these next year!!
Grass seeds and soil in a CD case. Great way to see the root system, and it sits up by itself! Art Projects for Kids
3 of my favorite sites to get free, fun, short videos for math and science! Kids LOVE them!!