If you use the Google, there are a bunch of standalone emblems, but I don't know what's involved in prying the old one off. If you mean the black backer, I think yer SOL unless you purchase the grille.
The grille "insert" does not come separate from the grille surround from Toyota. 53101-35080-A0 is the part number for a Super White grille assembly which includes the emblem as well.