When my first grandchild was born, I wanted to be called something other than grandma. My mother and father had the same last name when they married (not related!). So I had a Grandma C, a grandma-grandma (my mom's mom). I wanted to be called Nana, but that was my grandson' great grandma's nickname. So I became Nonnie. The quilting part is self-explanatory.
About 20 years ago I used my childhood nickname for email. My name is Terri and my sister pronounced it Toady. I've shied away from using it because of the negative connotation of a toady!