Just like humans, our pets need water. However, carrying an extra bowl can be cumbersome. At the recent Home & Garden show in Anaheim, I spotted a neat solution: The WaterRover. The Waterrover is a bottle that has a lightweight bowl attatched on top. It has a built-in clip so you can put it on your belt or waistband, and it's easy to use.
You simply lay the Waterrover flat on the ground, remove the tab, and the water comes out into the bowl. What's really great about the WaterRover is that after you're pet is done, you tip it backwards, and the unused water goes back into bottle for no waste. See more at their website.