Does anyone know where I could find a grommet/plug of some sort for this hole under the spoiler of my hatch? I got the car with this open so I'm not sure what was here previously, which has made it pretty difficult to find any information, so I apologize if this has been posted before.

 

measure the size of the hole and buy a rubber plug for it

 

Unfortunately that looks to be one of the only options. Might be a struggle to find a plug to fit in the oval shape, but it should work nonetheless. Thanks for the idea!