"Notebook paper" refers to the lined or ruled paper commonly found in notebooks. It is designed to help individuals write neatly and keep their notes organized. Full definition
There was a piece of notebook paper with something written on it stuck to the wall above the fireplace mantle, and some writing with chalk on the dining room floor. (realtormag.realtor.org)
I read the letter and it was handwritten in pencil on notebook paper. (fitnessandpower.com)
Even though they're long removed from their schooling days, small business owners can benefit by these sales, which often extend beyond lined notebook paper and Number 2 pencils. (creditdonkey.com)