Check out this water catcher umbrella concept. From the picture it seems like you can even plant the whole thing to grow some plants.
Well, I think if they can further take their idea into using the water as stabilization for the umbrella itself or make it steam out during a hot day, that’d be somethin’.
As you can see from the design there is a dip in the centre of the canopy where the water is directed, the material is specially made from compostable polylactic acid plastic blends, it is this that drives the water into the hollow rod, which has a carbon filter within.
So as the rain water washes over the canopy and down the rod, it is filter through the carbon. All that is required now is any plastic drinking bottle which can be fixed onto the handle and removed when full. It may not be quick, but it is better than wasting the rain water.