What's Your Most Invincible UX Resource?

Sally Kohn: I like to close the show with, you know, like I call it imparting of superpowers. They really love to first of all learn inspirational stories from our guests. But also they want to know some great resources. So what's your most your most invincible UX resource or tool? She says she has recently made the switch to sketch. It's a $99 software that is "so seamless and so fast"