More toddler activities- starts at 16 months. great for young toddlers
Make a baby "guitar" out of a loaf pan and rubber bands (from House of Burke: ROCK-a-bye: Exploring the Guitar with Baby)
Baby+ Box + Crayons = Zen Activity for Two Year Old. They love coloring boxes. My kids would eat the box, and color on the walls.
The simplest activities are the best with kids! Make a spider web out of painter's tape, let them throw scrunched up newspaper ball to see if they can get them to stick. - - My kids can BE Spider-Man!
20 Ways to Keep Toddlers Busy.this is an awesome list! I really like the paper towel tube on the wall and all the different pipe cleaner activities.