Of course the best use for baking soda is in baking soda and vinegar volcanoes. But is has many uses of a more mundane variety. It is an excellent non-toxic household cleaner and litter-box deodorizer. It can be used instead of toothpaste with the added bonus of whitening your smile, and many drink a class of baking soda and water on a daily basis to help alkalize the body. Oh, and some people use it in baking as a leavening agent.
Sodium bicarbonate, pure and simple.