Have a cheap bendable spoon? Make it into a bookmark.
Step 1: Step 1
Drill a hole near the top of the spoon.
Step 2: Step 2
Now put some string through the hole. That will be what marks your place.
Step 3: Step 3
Now bend the spoon back. If you have a book with a paper cover on it slide the spoon in it. You can also attach it to the front of the book. See the picture below.