Keep a diary about what you are getting up to.
Bake a cake and write the instructions in your own words - why not write your own cookery book of your favourite recipes.
Write a story about life on board ship in Tudor Times.
Write a story about an adventure as a Tudor child.
Write a page for a not fiction book about life on The Mary Rose. https://maryrose.org/
Why not research a famous author and write a biography for them-remember the structure from when we wrote about Thomas Wriothesley,