Normally when you do corner triangles you would start with a square, stitch diagonally from point to point and cut off the excess leaving a quarter inch selvage. Press to set the seam and then press open, I did this for the first one. Then I measured the corner I cut off so I could make my ruler the template for all the other corners.
I figured if my first step was to cut off that corner I could use scrap for my insets not full squares. No more wasting half or worrying about the square moving while I sew. I just used a sticky note, some tape and a clear ruler ~ ta-da!
Press the scraps and use the ruler to cut off all the overage, save anything big enough to use again
So much easier with very little waste, now if I only had a use for about 100 tiny white triangles