Handful of Concepts - Umbrella Gun.

"Umbrella with a water-gun handle."

Why not add a 'Water-Gun' handle on the end of an umbrella to make those rainy days much more worth while. the middle bar that supports the brolly would be a tube heading down to the gun so if its raining when you use it - it is collected at the top of the umbrella then transfers down the tube into the gun. You can also use it as a shield to hide behind incoming water fire from others.