I have a box of 2" squares that I've cut over the years from leftover scraps. I recently read about the leaders and enders concept, so I started sewing together the 2" scraps (1 color 1 neutral) as my leaders and enders. Now I've decided that I'll keep adding those scrap squares together as leaders and enders until I have enough to sew together for a scrappy Irish chain. Any that get ruined in the process are still only scraps, so I just toss them and keep working on my "real" quilt. It's just a fun (and thrifty) way to use scraps.