Stopping rain from falling on something with an umbrella is boring. What if you tried to stop rain with a laser that targeted and vaporized each incoming droplet before it could come within ten feet of the ground?
xkcd’s What if? is a YouTube channel worth subscribing too, and getting a copy of What If? 2 and Randall’s other books at: https://xkcd.com/books too. As well as digging through more serious answers to absurd questions at: https://what-if.xkcd.com