Janet Kime's Border Workbook has a great one. I think you can find similar ones drafted on line.
https://www.amazon.com/Border-Workbo.../dp/156477693X
Edit: I "traditionally" pieced it for the border on my cat quilt. That was the very last time I will ever cut triangles that small! From here out I have used the square with the line drawn on the diagonal when I go below about 2".