A long, fully lined wool men's coat. I made it for my DH about 9-10 years ago, and he's worn it maybe 5 times. Oh, and my wedding dress, of course.
I love my flannel quilts, they're the ones everyone fights over. However, I used Moda flannel. The one I made for my youngest son has been washed A LOT; he had a medically-caused bed-wetting issue for a while. The binding corners are starting to wear, but it hasn't pilled yet.