When spending hours in the blistering sun, you can count on sunscreen for protection—but less so for any reprieve from the stickiness. Keep heat wave in check, wherever you are, with another lightweight lifesaver: Insten's Mini Misting Fan. Power up its rechargeable battery in the morning, and you'll have a personal breeze and facial mist all afternoon using its three fan speeds and two spray settings. The 20 milliliters of water it holds go a long way to cool you off, while hardly weighing down the handheld gadget—ideal for either your outdoor space or on the go! Available at Amazon; $16.99.