Camelbak, best known for their hydration backpacks with the "Bite-n-Sip" valve, have released a line of water bottles that incorporate the same valve, the better to prevent spills. I've got a generic Nalgene-type bottle I use for water all day, but when it's near empty the heavy cap often will pull it over, so I'm amenable to better cap solutions. On the other hand, I hate having to suck a trickle of water out of a bottle, preferring instead to gulp a torrent of tap water in quantity sufficient to feel the chill in my belly. The choices of first-world living are so harrowing!
Available in a few bland colors for $10 to $14, the Camelbak "Better Bottle" also has a clip on the lid for a carabiner, should you ever actually go outdoors.
Camelbak Better Bottle [Gear Patrol]
Previously • "Life Saver" Water Filtration Bottle [BBG]
• Gadget Bottle: Water Bottle with Nest for Your Stuff [BBG]
• Binibottle: Teen Invents Easy-Fill Water Bottle [BBG]
• Solar Bottle Uses Sun to Purify Water [BBG]
• Eight Reusable Water Bottles Compared [BBG]