Water, Water, Water
I don't care what diet you follow, drinking water is the single most important thing you can do for yourself.
In most of the US, fluoridation is still the rule, even though it is long since scientifically obsolete. Besides just filtration in general, you want to be specifically sure that you are filtering out the fluoride. Whole house filtering is an option for some, but expensive. There is a simple and easy, pitcher-based solution I have used for the last few years, and I am very happy with it. These filters, by ClearlyFiltered, are very highly rated and economical.
Perfect Gear for your Plant-Based Kitchen
Have at it, here are my favorites after years of experience with plant-based cooking.
By the way, excuse my obsession with kitchen knives, but remember, a dull knife is more dangerous than a sharp knife. Also, in practice, you will find that with a razor sharp knife you can cut up an onion practically without tears, whereas a dull knife will crush more than cut and it will make you cry for that reason. For me, how much the onions make me tear is always the tell tale sign that my knife is going dull.