If you ever need to get out and be "in nature," we recommend picking rosehips. They're ripe this time of year.
After you pick them, take them home and dry them for storage over the winter. When you want some tea, mash them up and soak them in water.
We've found that an infusion in cold water makes for a darker tea, interestingly enough. To make a cold infusion, put the rosehips in cold water, and place them on a windowsill for 24 hours. After you drink the tea, you can boil some water and make a hot infusion as well.
If you just want a hot tea on a cold winter day, you can do that as well.
Rosehips are loaded with vitamins and are great for those times when you don't have any fresh fruit!