1/2 Cup Real Aloe Gel (be careful to look at the ingredients and avoid products with too many chemicals! Luckily, Whole Foods sells locally grown real aloe gel here in the San Diego area... Real Aloe Inc.) or if you're super crafty, you can use a real aloe plant, and get the gel out of it. You'll probably want to put it in a blender or something like that to get all the bumpy inconsistencies out... But make small batches, as this would probably only last a week or two. Vitacost.com is an awesome website I use to buy organic and natural beauty products.
1 Tbs Baking Soda
1/2 Tbs Ginger Powder (natural Astringent)
10-20 Drops Peppermint Oil
Mix well (trying to get all the baking soda and ginger powder lumps out) in a container first, then transfer to a squeezable container. I reused a plastic Jojoba oil bottle because it was squeezable and had a living hinge-type cap with a small hole. You'll probably want to use a funnel to help pour in the bottle, and since the mixture will be a bit stiff, use something (a bamboo skewer worked awesome) to help it go through the funnel.
This recipe is great because it polishes your teeth and makes them feel super clean! It also leaves your breath fresh and ready for an up-close day ;)
I'm going to try another recipe with lemon (a natural whitener), so once I've tried it, and it's successful I'll post the recipe :) I've also read that strawberries (their malice acid) are a good natural whitener! Mix a smashed strawberry with baking soda and scrub over your teeth with a toothbrush.
Enjoy your squeaky clean, chemical-free toofers! :)