Outdoor party season has finally returned! Make sure your house party will be the best in your neighbourhood thanks to these 9 ideas. Make Your Cooler the Coolest Forget filling up your freezer with ice makers and save space for some Vodka. Buy a bag of balloons and fill them up with water. Freeze them over night and place the balloons in your cooler. Bonus: After the ice melts you have ammo for a water balloon fight! More info here.