Science Project idea (need variable and and controlled factors)?

I need to do a science project with a variable. Examples:Which paper towels are most absorbent I would use same amount of liquid and same liquid but different paper towels and test it.





I want to do something different and creative (ten people are the paper towel thing.) But I'm short on ideas. So anyone have an idea?Science Project idea (need variable and and controlled factors)?
These sites have lots of ideas for doing a science project:





http://www.usc.edu/CSSF/Resources/





http://www.sciencebuddies.org/





http://www.all-science-fair-projects.com





http://www.ipl.org/div/projectguide/





http://school.discoveryeducation.com/





http://www.picadome.fcps.net/lab/





http://www.scienceproject.com/





http://www.energyquest.ca.gov/projects/





http://www.freesciencefairproject.com/





http://scienceclub.org/scifair.html