Well, spent some time rooting around. Not a bumper bracket, not a radiator bracket, not from the headlights, foglights, liscence plate. Only other things in that area up front are a couple fluid bottles which I suppose it could be from under but I couldn't find anything missing. Couldn't find any missing bolt holes anywhere in that area.
I'm stumped, there are only so many things up there that it could possibly come from, and I searched everywhere short of actually removing my bumper and skid plate. I mean, apparently it's not that important since my car hasn't imploded, but the more I search the more I want to know what it is.