Something fell off my '00 Camry
 

I just joined because I am both a fan of Camrys and because I have a question.

In front of the intercooler on the bottom there is a plasic cover of some sort and it looks as if its held on my 4 bolts. When walking back to the car I noticed something hanging from the car and this was is. I pulled it off because it didnt look too important. Can anyone help me? What is it and is it important?

Here is the location:

Attachment 4380

This is the part:

Attachment 4381