Using the “double knitting” technique, these simple catnip pillows are easy and fun to make. Double knitting looks like flat knitting and is just as easy, but when you remove the knitting needles from the work, the knitting magically opens into a little knitted bag! Fill with batting and some catnip (or potpourri if the pillow is for people), add a French knot, graft the pillow closed, and you’re done.