I use them for plastic bags. I also tape one of the square ones to the platform my sewing machine sits on. The cat likes to 'play' with stuff that is on the platform, and with the clear plexiglass, she can see a lot. She takes stuff or knocks them off into the wastebasket never to be seen again. I have lost too many seam rippers, buttons, skewers, etc., and know that they went into the wastebasket. So... I tape a small box to the edge of the platform, and have found the said above list in the box. Without the box... in the trash.