I stitch them together and use them on a scrappy quilt.

I've been leaving it rolled up on a TP cardboard and wouldn't you know it, some of it were just what I needed for the Allietare mystery. Mine are cut at 2.25 or 2.5 depending on their age so I only had to trim off .25 to .5 off. Otherwise I keep them for smaller projects such as hotpads.

I don't usually have enough left over to save them. Plus I cut most of mine 2" these days but I might be inclined to just press the edges under and make woven fabrics pieces for pot holders or other items. I love that you guys are using them. Awesome question.

I sew charity quilts and use for Jelly Roll race quilt or scrappy bindings. Many of my guild friends save them for the charity quilts.

If I have as much as six inches left over, I save it and make scrappy binding. Most of the patterns are not recognizable, mostly just the colors. I use this quite often.