It's a thing the props up my aero 14 laptop nicely for better airflow.

Creality

Ender 3

No

Yes

Your choice

< 20%

I wanted to give it versatility and a unique look so I designed it as a ramp. You sort of flip it upside down to prop up the laptop in the gap that is between the exhaust fan and the monitor. Or you could use it to hold anything up since its a simple edge otherwise.