Vector-based flat art was suddenly everywhere, especially in startup and tech branding. Its ubiquity felt eerie, its relentless optimism infantilizing. Subscribe to the Design newsletter.

Amazon is selling Anki's Vector smart robot for $175 today, 30 percent its list price and the lowest price we've ever seen.

The flat iron is a delicious and cheaper alternative to some fancier cuts, but it's easy to mess. Here are our expert-approved tips to get the most out of it.