Keep Calm and Recycle On

I LOVE these dryer sheets from zJayne's Etsy Shop. They are made from upcycled t-shirts and filled with organic lavender buds. I personally like the "Keep Calm and Recycle On" ones, but she has other designs as well.
Supposedly they last for months! I think I'm going to give them a try, I'll let you know what I think.