The Boo Boo Bag is a staple in our house - it keeps nicely in the freezer and can be whipped out, ready-to-go at any moment for any ice-necessary injuries. The finished bag is about 6 in. x 4 in.
• 13 in. x 4.5 in. cut of fabric
• 16 oz. bag of lentils (or your favorite bean - I used lentils because no one in my house will knowingly eat them, and thus we have a surplus)
Take your 13x4.5 strip of fabric and fold it lengthwise, with the right sides facing each other, and secure with pins.
Next, sew the long sides of the fabric from the open end to the folded end using a 1/4" seam. I also went ahead and sewed across the top of the pouch, leaving about a 2-inch opening for me to pour the lentils into (the lentil chute!).
Now turn your little pouch right side out and get your lentils ready to pour in the lentil chute. (This is the part where you get to swear profusely under your breath when you can't find your funnel to get the beans to cooperatively pour into the pouch.)
Once you have your lentils in the pouch, fold in the edges of your lentil chute (the 2-inch opening you left) and topstitch all the way across the top of the pouch.
And, voila! You have a Boo Boo Bag! I store mine in the door of the freezer and spot clean it using a damp washcloth.