Step 1: Materials
You will need a bottle of water and an empty grocery bag.
Step 2: Tie a Knot
Take your grocery bag by the handles and tie a knot. Using either handle as the two sides of your knot. Try to leave the loops only big enough for the too of your bottle to fit thru
Step 3: Fit the Bag
Put one loop of the handles over the top of your bottle and then you will have another loop and the space created when you tied the knot loop this space around the top of the bottle too. Leaving only the second handle loop free.
Step 4: Twist
Twist the bulk of your bag into a long piece
Step 5: Thread
Thread the long twisted piece thru the left over handle loop and tie it to its self
Step 6: Done!
Now you have a handle for your bottle! Enjoy!