Wintergreen mints -- you know them. You might not have known that you can create lightning in your mouth with one of these Wint-o-Green mints. If you didn't know that, you missed a chapter in your childhood... How to do it? Go into a dark space, with a mirror... This works best if your mouth is a bit dry, so try to get to that state... then pop in a mint, and with your mouth open, crunch it with your teeth. The fracturing of the sugar causes a tiny lightning charge to jump across the broken pieces, and yes, you can see it.
You can also figure out to explain to your friends what you are doing, crunching mints in the dark in the bathroom... but that's another story.
When it's not appearing as a white mint, ready to light up your mouth, wintergreen is one of our forest plants that stays green all through the winter. Also called Eastern Teaberry (yes, you can brew tea from the leaves) it has a host of medicinal uses, and lovely red berries that brighten up the autumn days.