Okay, this isn't really my first step to reducing waste, but it's a new action I learned from the Trash is for Tossers blog.
Making my own toothpaste is really simple. Here's the recipe:
2 Tablespoons organic coconut oil (firm -- not liquid)
1 Tablespoon baking soda
15 to 20 drops organic essential oils like peppermint, spearmint, cinnamon or whatever flavor you may like
5 drops of tea tree oil (optional)
Mix these ingredients together is a glass or stainless steel container with a lid using a reusable tool such as a chopstick.
Use a spoon or other device to move the toothpaste to your toothbrush. (Next step -- buy compostable toothbrushes. Every plastic toothbrush I've ever owned still exists out there somewhere, never to decay.)
If the toothpaste gets too soft, pop it in the freezer; too hard, run the container under some warm water.
Here's the link to the blog so you can read more about why to make this toothpaste and see a video of it being made. (That's not me in the video):