Post-it Durable Index Tabs
These are sturdy, they stick well, and you can write on them. Great for labelling a piece of paper with a "to do," such as "CALL THEM," or for just making it easy to identify in a meeting or a file full of papers. My best use for them is for reference papers. I have a 3-ring binder full of papers I refer to frequently, such as phone lists, billing codes, instructions and so on. Each one is in a clear document sleeve, and is labeled with one of these tabs for easy reference.
Everyone knows how hand Post-Its can be! Leaving yourself notes or others never was easier! They stick to just about anything and when it comes to sorting projects the colors couldn't be more helpful!