That little plastic slide cover people like to cover the camera with can crack the screen.

It's not that they're fragile. But in an effort to make a thin, and light device. The space tolerance between the screen and keyboard is very tight when closed.

https://support.apple.com/en-us/HT211148 >If your work environment requires a camera cover at all times > >If your work environment requires you to cover the camera on your Mac notebook, follow >these guidelines to avoid damaging the display: > > Make sure the camera cover is not thicker than an average piece of printer paper >(0.1mm). > Avoid using a camera cover that leaves adhesive residue. > If you install a camera cover that is thicker than 0.1mm, remove the camera cover >before closing your computer.