This is a great hack for school and also very useful!
Step 1: Supplies
Something to Hide
Step 2: Outline It
Take the thing you are hiding and outline it 50-100 pages in using the marker.
Step 3: Cutting it Out
Take the blade and push it into the book on the page you outlined on the outline. Now use that hole to stick the scissors in. Finally cut out the shape. Repeat.