The Secret Notebook
No one would expect you to keep money in a notebook!
And....One more thing, don't forget to checkout my Secret garbage bin!! (https://www.instructables.com/id/Secret-Garbage-Bin-/)
Supplies
All you need is a notebook, pencil and a knife.
Draw a Rectangle in the Middle of Your Paper
Draw a rectangle in the middle of your paper but make sure you leave some pages in the beginning.
Cut Out the Rectangle From Each Page
In this step you will cut out the rectangle out of each page but make sure you go one by one as it will look cleaner, once you are sure you have enough space to keep something you can stop and smoothen the inside edges.
What to Keep in It
you can keep anything in it from coins to cash to cards!!!