But, since it is a good idea to show this notebook with the display of your project, I suggest that you read some of the ideas on this Science Fair Project: Log Book Link. Following are ideas for a paper towel water absorbency ...
Paper Towel Absorbancy. My sister finished her science fair project today. She did the classic "Which paper towel brand best absorbs water?" experiment. There were a number of things she did wrong. Her procedure was basically have a square (27 cm x 27 cm) of each of the three brands and put each ... Then she kept it in for some amount of time, I'm not sure the exact amount, and removed it, looking at the new level of water to figure out how much was absorbed.
A study in the absorbancy of paper towels
CSHS 9th Grade Science Project 3rd Hour - Eric Kidd