This is my "not mom"! She is a co-worker I used to have and grew to love! We'd tease each other that she was old enough to be my mom. Then she started leaving me notes, signing them "Mom" so I started calling her mom. One day after I'd quit, I came back so we could go out to lunch. As we were ordering lunch I called her my mom, but then I looked at the cashier and said "She's not really my mom" (don't know why!) so now she calls herself my "not Mom" thus the title!
I made the not symbol by painting a chipboard circle red. Then I cut a white circle out (a little smaller than the chipboard circle) and cut it in half. I adhered it to the back and voila! I worked out how to do it as I talked to my sister on the phone.