Natural Mints / Breat Fresheners

Hey you all,

Just interested in hearing ideas of all natural breath freshening... I'm bored of buying mints from the store, they're all full of everything unnatural... Even buying stuff off health stores feels like a compromise...

Is there something I can make or use myself, and if possible, carry around with me? I've been thinking about pickled ginger, but it's a bit spicy!