I'm the computer systems manager at my company and spend my days speeding from one crisis to another. I'm often given information about a problem while en route to another, so I use the smallest Post-its to write notes to remind me what I need to do next. If I take directions to a job site, I write them on a Post-it Note and stick it to the work order. When I leave the office, I pull the Note off the work order and stick it on the steering wheel or dashboard for hands free access as I'm driving. Once that particular job is finished, I write my mileage and elapsed time on the bottom of the Post-it and stick it to my time card.
Notes are great for removing pet hair or lint from clothing.
I got in the habit of sticking the Notes to my wall and forgetting to take them down. After three years, I managed to just about cover an 8x12-foot wall of my office.