When you take the “Silk Give 5 Challenge” on Facebook, you can give your friends free Almond Milk. All you need to do is share the challenge with five friends. They will receive a coupon for a free half gallon of Silk Vanilla Almond Milk which is valued at $3.99! Hopefully, your friends will share the deal back with you so you get a coupon as well. You’ll also be entered in contest to win $500 for free!