1 Fat quarter
Some plastic bags
Step 1: Find something around your house with about a 5" diameter (from one side of the circle to the other). I used a cd case. Trace it and cut it out.
Now sew these down with a quick seam.
Now fold it down again about 1 1/2" and sew it down.
Turn it right side out. You're done with the bag!
Place them right sides together, sew along one of the short sides and iron your seam open.
Fold it in half hot dog style and iron.
Open it up and iron in one of the sides up to the crease in the middle.
Repeat with the other edge, so that they meet in the middle.
Now fold it in half again hotdog style and pin in place.