I cut all scraps into squares of various sizes that I put into marked shoe boxes. I keep the 2" squares in a small box next to my machine and use as "anchor" cloth before and after I sew a seam. I take the sewn pairs on road trips and hand sew into 4 patches.
When my daughter wants to sit & chat while I'm sewing, or my granddaughters visit, they love to sew the 2" squares together on my extra machine. We get to visit and sew at the same time.