I took a look around that area of my '07 Sport but didn't see anything similar. Don't have time today to disassemble anything but I looked from above with the hood open, from below (under the car), and at whatever angles I could get some light from inside and outside the wheel well. Must be in the void where the wiper fluid tank is located.
THis would drive me insane. With my job I overanalyze everything but please do tell use what it is when you find out. Bring it to a Toyota parts manager and he will tell you I'm sure
You and me both! I have a bolt in my cup holder I can't figure out where it came from or when I took it out. It's been in the cup holder for over a year because I know if I get rid of it I'll find where it went the week after.
^ This.
I was thinking maybe the adjuster for the fog light? Mine are long gone so no way to confirm...