So, like any 4 year old could probably point out, sticky things (like say food dropped on the floor) attract fuzz. I think it was the events of the weekend which saw me use the better portion of a bottle of fabric cleaner on the carpet to remove previously fuzzed food that made me realize what a perfect dust attractor the sticky side of a post-it (oop - sticky) makes.
So, here's my reuse tip for sticky notes that are headed for the bin. Put some dust on them first and do a little cleaning in the process.
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One used up sticky had enough stickiness to clean most of my keyboard. A hastily scribbled note provided the raw materials for the remainder of the needed cleaning. :-)