Whenever I watch the movie The Wizard of Oz, it strikes me just how vulnerable the wicked witches are. I mean, if water makes them melt and destroys them, the rain must be positively hazardous to their health! (And I'm not just talking about it aggravating their knees and corns & bunions!) And that's why I think someone should invent the Wicked Witch Umbrella.
Yes, it's the Wicked Witch Umbrella: it protects you from the rain as if your life depended on it! Plus, wicked witches will know they're safe with the Wicked Witch Umbrella because it's the only umbrella that's actually shaped like a wicked witch's witch hat! Yes, the large black umbrella protects you from those melting raindrops because its large, pointed top has a wicked witch-sized conical interior so you can stand within the umbrella itself while the large hat-brim sides keep your feet dry and melt-free all around within a radius of four feet in all directions!
That's the Wicked Witch Umbrella: ask for it by name wherever black magickal supplies are sold! (From the makers of the easy-to-wear Wicked Witch Parka: flying your broom won't spell your doom when it rains with the magical watertight protection of the Wicked Witch Parka!)