Things might be no good for sewing, but good for other purposes. Scissors with no points can be sharpened and go in the toolbox in the garage. Otherwise someone will snitch the good ones. You don't need points on the scissors to cut open a bag of bird seed.
Cutting mats that are not cut through but not usable for rotary cutting can be used for papercraft, making photo mats,
and cutting other junk. If you are cutting anything on breakfast bar - use the old large Olfa. Other half was cutting up foam rubber with an adjustable exacto knife to make a seat cushion. Use the old mat to cut on.