How can I tea stain paper using an oven?

To tea stain paper using an oven, brew a strong cup of tea and let it cool. Dip a brush or sponge into the tea and apply it to the paper. Once the paper is stained to your liking, place it in a preheated oven at a low temperature (around 200F) for a few minutes to dry. Be careful not to let the paper burn.