I thought it was the other way around? I just used the one on the left to remove my muffler bearing last night.The one on the left is for removing the glove box filter and the one on the right is for servicing the muffler bearings.
Sorry I was being a smart ass thinking someone would give you the right answer. I did 't have those. Personally they look to me like plastic injection molding flashing or sprue. Did you ever put plastic model cars together. Remember those extra bits of plastic that connected everything? I think that's what those are. So if no one else comes back and says they are something different I think you're safe to toss them.The one on the left is for removing the glove box filter and the one on the right is for servicing the muffler bearings.
I agree, I think they are taken/twisted off during the build of the cabin. I found one behind my subwoofer.They look to me to be something the dealer twists off. Maybe they held a protective cover on. I can't figure out where though.