Supplies:
Knee length skirt that has an elastic waist.
Yarn or rope
Bobby pin or safety pin
Random fabric/stuffing/blankets/old clothes
Scissors
Take your skirt and from the inside find the seam on the waistband. Cut a slit into the fabric so you can remove the elastic.
Next take your Bobby pin and tie your yarn to it. Start pushing the yarn into the hole that you removed the elastic through. The Bobby pin will help you slide the yarn through the hole.
When you get back to hole pull the yarn as tight as you can. You are creating a drawstring.
Next, pack the skirt with fabric scraps/sheets/stuffing/old sweaters (whatever you have)
Now repeat all the the steps for creating the drawstring in the bottom hem of the skirt. Cut a slit and run your yarn. Then pull it tightly and tie it off.
There you have it. You made an easy pouf out of a skirt!