When the weather gets warm and the days get longer, I love to use the power of the sun to make sun tea. Get out a glass jar of any sort. It can be a canning jar, a pickle jar, an actual sun tea pitcher, or what ever else you happen to have on hand. Place in however many tea bags you usually use (we use 7 for a gallon of tea), cover the bags with cool water, and set in a sunny place. This can be outdoors or indoors. Make sure that the top is covered with something. A lid, a plate, a wash cloth, just something to keep the bugs out. Allow to sit in the sun for a few hours. When the liquid inside is dark brown, bring it in a make your tea as usual. We do the 7 tea bags to one cup of sugar and 1 gallon of water. Refridgerate till cold.
This is a frugal option in that you are using no "man-made" energy to steep the tea. It is all done by the sun. And it tastes lovely!