Thermos Nissan Leak-Proof Travel Tumbler, $26
Stainless-steel walls with a vacuum between keep drinks hot or cold for hours. Come winter, you'll bless the rubber grip for keeping hands far from metal. The carabiner can hold an ID in the morning and clip the mug to your bag at night. Hand wash.

Size: 14-ounce capacity; 2 3/4-inch base diameter.

To Buy: www.target.com.