Keeping your pooch hydrated on the go can be a bit of a pain - it's not really feasible to carry a bowl on your morning run. However, there's a solution! Bowldog ($7) is a flat, flexible fold of plastic that becomes a sturdy bowl when filled with water. When Fido's finished, fold up and seal the bowl and toss it in a bag or attach it to a leash. Plus, there are plenty of patterns, so you can find one to suit your dog's demeanor.