I got my FREE ZonePerfect sample this week. It's caramel toffee flavor. I also got a $1.50 coupon for a box or 3 singles. This offer is still ongoing; check here for details.
I also got my FREE Crest 3D whitestrips sample from Walmart. It's two strips, one upper and one lower. Two coupons were included: $10 off one whitestrips box and $1 off Crest 3D white vivid or advanced vivid paste. It is also still available, just fill out the form here.