The $16 Lifesaver I Packed For a Weekend on Fire Island — Plus 9 Other Essentials

Liquid I.V. Sugar Free Peach ($16)

Liquid I.V. is my go-to for every wedding weekend — especially since I tend to leave my water bottle back at home. Walking around dehydrated and drinking more than I normally would adds up to a horrible hangover, so these packs really help me stay on track. They contain electrolytes and come in a ton of flavors – like peach, lemon lime, pear, and strawberry. They're kind of like Gatorade in a small packet and are perfect for staying hydrated on the go.