Freeze water balloons and use them inside your cooler to keep things nice and cold!! 🥶 ☀️ There’s no mess this way and once they melt you get a bonus water balloon fight! 🙌 Tips: Freeze in a single layer (a baking sheet or shallow pan works great) 24-48 hours prior to using for best results. Make sure to slightly under fill the balloons so there is room to expand once frozen. If using quick fill balloons make sure to pull down the rubber bands prior to freezing. If you want more durability use regular balloons but DO NOT use those for a water balloon fight! #CoolerHack #SummerHack #SummerTips