This post has been a long time coming. I bought One-Yard Wonders a while ago, but this is the only project I've made from it yet. But I've made this project three times! The first, pictured above, was for a birthday in early January.
The other two, both made at once, were for an early February birthday (the Hope Valley one) and for me (the repro one--of course!). I filled all three of them with flax seed, and I can tell you that mine gets pretty hot pretty quickly and stays that way for quite a while. The ones I gave as gifts were very well received.
The best part about these (other than the fact that they're quick to make and only require one yard of fabric)? You wear them! It is such a simple thing but makes such a difference! The book is pretty good and comprehensive. I have plans to make a couple more things for sure, plus it's already proven itself to be a great go-to for quick gifts, so I'm sure I'll be spending more time with it in the future.