Some people like to make their clothes, their own bread, can produce, etc. Don’t stop there – make your own toothpaste. From Stephanie Tourles:
1 tsp baking soda
1/2 tsp finely ground sea salt
A drop of peppermint, spearmint, etc. (Pick what you would like your toothpaste to taste like and use that flavor.)
A splash of tap water
Mix all the ingredients until it forms a paste thick enough to put on your toothbrush.