I think every quilt I do ends up with some little horror story attached to it. I'm good for a meltdown (usually silent beating up of myself as I don't want anyone to know I make mistakes) at least once a week. I'm still a bit of a novice, teaching myself as I go along. So there are some great scraps from cutting wrong and an assortment of blocks that are too weird for the quilt. Someday I will make a quilt of "not square" squares.
Luckily, no injuries for me.
My biggest horror story is the "quilt police"- remember I'm a novice. about 2 years ago I made a quilt for a family reunion and there were quilt police there. I almost grabbed my quilt and ran home. I was ready to cry and I felt sick to my stomach. But, it must not have been so bad as I get asked each year to make one and they sell a ton of tickets and fight over who will get it.