Background: I had to type a book report tonight and the book kept closing on me thus driving me crazy... And voila an instant fix that allowed me to finish in no time!!
1. Find a metal hanger
2. Bend the "hook" end up (see picture with my hand in it)
3. Place book inside hanger (see picture with book inside hanger)
4. Read/Report more!
Additional benefit: When you type on a computer, in front of your book, your arms will press down on both sides of the hanger flattening the book further.
Note: This works for books varying in size from 8 to 16 inches tall and 4 to 9 inches wide.