Nissan 11-Ounce Stainless Steel Coffee and Tea Traveler

This small, rugged stainless steel thermos is perfect for making a cup of coffee or tea to enjoy later in the day. The screw-top lid makes a tight seal, so you can throw it into your backpack without worrying about spills. Remove the lid, and you'll have a regular splash-proof travel mug that fits neatly into your car's cup holder (and it feels nice in your hands, too). There's even an included tea steeping basket.

The instructions warn to not overfill the thermos (there's a fill line on the inside) -- if you do, it may leak, but I've never had a leaking problem when I don't overfill.

I use this while birding or hawk watching on cold days, and having a hot cup of tea is a real treat. To keep your beverage especially hot, preheat the thermous by filling it with boiling water for a few minutes before filling it with your drink.

In a world of giant-sized drinks, the 11-ounce capacity may not seem like much, but I've found that it's perfect for me.

Available from amazon.com and many online retailers.