Plastic bagged snacks on a store shelf
The Soda Bottle Hack For Keeping Plastic Bagged Snacks Fresh
Once opened, the quality of most snack bags degrades quickly. To prevent this, you can create a quick and effective airtight seal using a clean soda bottle and cap.
With the lid screwed on, cut the top of a clean, empty soda bottle just below the cap. Unscrew the lid, take the open snack bag, and thread the open end through the bottle's top.
Push the plastic up through the bottle's neck until it sticks out a few inches from the top before you unfold or unroll the plastic bag around the exterior of the bottle's neck.
Finally, screw the bottle cap back on with the bag's plastic caught between the bottle's neck and the cap. This creates a very tight seal that will help keep your snacks fresh.