These place-mats are the kind that are double layered.
First you need to carefully take apart the seam on one end. Just an opening large enough to be able to stick your hand into it.
Next, take some cotton batting stuffing and begin to stuff, making sure that all corners are well stuffed.
The last step is to hand sew the hole back up and voila!
You have perfectly stuffed pillows! I was thinking seasonal pillows would be so reasonable to have throughout the home. Valentine's Day, St. Patrick's Day, Easter, July 4th, Halloween....... oooh, the possibilities!