A vote for Sew Easy’s “Clear Grip”, electrostatic plastic you add to the underside of your quilting ruler to stop the fabric from slipping ever-so-slightly when you’re cutting ‘width of fabric’ pieces. You cut it to size and it sticks to the ruler.
A similar product is “Invisigrip”, though neither of these products are available on Amazon that I could see, so I couldn’t add them to my Amazon store.
Rhonda Bracey: At Random 
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