Why not have a look at one of these activities as a study-break or something for you to do when you're bored?
This amazing crossword was created by Aiden (Year 11) and is a great activity for any spare time you may have! Use the clues to fill in the grid, as you would for any crossword. It might be easiest if you print this out on paper, although you can type directly on to the document if you make a copy of it. In the squares with the clue number on, you should press ctrl full-stop to get the font to normal, and then type the letter in the box. When you have filled in the grid, you should find six thematic words which all are based on a specific theme hidden inside of it. You should highlight these words in their appropriate colour. Good luck!