With the coronavirus continuing to upend familiar rhythms of life, leaving schools shuttered, millions out of work and billions stuck at home, those looking for ways to pass the time have gotten creative.

In the absence of jam-packed calendars, people are turning to social media challenges in droves. Some bring together families for choreographed dance routines while others spark the inner artist or unlock hidden engineering skills. All of them hold the promise of warding off boredom and — maybe — earning users a moment of online celebrity.

Here are some of the biggest challenges sweeping the world amid the lockdown.

#FliptheSwitch

Early last month, the lyrics “I just flipped the switch” from the Drake song “Nonstop” inspired a viral challenge on TikTok that eventually made its way to Instagram. All over, people began swapping clothes, poses and sometimes attitudes when the lights are switched off and then back on. A version featuring Senator Elizabeth Warren of Massachusetts and Kate McKinnon of “Saturday Night Live” went viral, as did a clip of Jennifer Lopez and Alex Rodriguez.