To all the others I would like to add:
1).Missouri quilts on Utube!!! It doesn't have a stop button, so I can really take a good look at the quilt block I am trying to put together. I get so frustrated, going over and over the same small section.
2).Spending hard earned money on a ruler and finding out that it isn't exact!!!
3).Fabrics that bleed and bleed and bleed after repeated treatments. And the time spent trying everything to stop the bleeding, and then it still bleeds.