What's more fun than baking soda and vinegar?

For our science activities this week, we played with baking soda and vinegar. This is the link I used.
http://scienceforpreschoolers.com/topic/chemistry/baking-sodavinegar

Day 1: Experiment with baking soda and vinegar by playing with it and seeing what happens when you mix it together.
Day 2: Blow up a balloon using baking soda and vinegar.

This week we'll be making Irish Soda Bread with baking soda and vinegar!