If the giants win on saturday, all the 7-8 teams playing on sunday are done (STL, CAR, ATL) If the Giants win, Green bay will be also be out of it unless something strange like a 10-game parlay comes in on sunday that gives them the advantage in the "strength of victory" tiebreaker, making their game against Chi meaningful. Otherwise a Giants win probably means the packers are out too.
If the giants lose to the skins, STL and CAR are both in play at 1 on sunday
If the giants lose, but the Panthers win, the Falcons still have nothing to play for by 4:15. They need both NYG and CAR to lose.
For the Packers game to be meaningful if the Giants lose, Either STL has to lose, or Car or ATL has to win. (They lose a 2-way with STL, but win a 3-way with STL and one of the NFC south teams)