This morning, my brother asked me for help with his history project. He was asked to create letters from the past for a historical figure of his choice and submit the letter as well as an analysis of it. He wanted to purchase aged paper online or find some lying around in the house (unfortunately we didn't have any).
I decided to take it upon myself to transform an A4 sized paper to an aged looking paper. I have outlined the process images as well as the ingredients and steps down below.
You will need 2 or more A4 sized papers, teaspoon of Nescafe coffee (you can swap this with tea if you want), a bowl of hot water (preferably not boiling otherwise you have to wait for it cool down) and finally you will need a baking dish or a flat surface. Start off by ripping all 4 edges of the papers.