All you need is a standard plastic grocery bag (nothing fancy). Start by placing one cup in the bottom of one side of the bag. Then, give the middle section of the bag two tight twists. This helps create a separation between the two sides and stabilizes the base.

Now, place your second cup on the other side of the bag.

When you lift the bag by the handles, you’ll notice that the cups balance perfectly on either side, almost like they’re in separate pockets. The twist in the center acts as a divider that prevents the cups from knocking into each other or sliding around. The added tension in the bag also keeps it firm enough that the cups stay upright as you walk.