Erm, lower campus as in Walker and Scott and all those?
We (Flakes, Myself, and Co) went around a put some in each hall of Scott and all the exits. Walker got a few. FPAC has a couple on the exits followed by Belk, Leatherwood, Dodson, and the UC. I think there are supposed to be a few on light poles and such but I didnt look to see if they are still there.
Unless you mean lower as in Norton and stuff, in which case I havent a clue.