Contigo SnapSeal Byron Vacuum-Insulated Stainless Steel Travel Mug I like to whip up smoothies at night and stick them in the fridge to grab before work the next day, so I'm not tempted to grab a single-use cup from the smoothie shop. Temperature-regulating bottles like the Contigo SnapSeal Byron Vacuum-Insulated Stainless Steel Travel Mug ($13) keep those smoothies cold and fresh until I'm ready to sip away; a beverage should stay cold for up to 18 hours in this one! Image Source: amazon.com Contigo SnapSeal Byron Vacuum-Insulated Stainless Steel Travel Mug $13 from amazon.com Buy Now