Make money without even trying: That's what passive income is all about. But good investment alternatives are required to make this "easy" money.Three Motley Fool contributors believe they have found some great dividend stocks that fit the bill. Here's why they think Abbott Laboratories (ABT 1.08%), AbbVie (ABBV 1.30%), and Johnson & Johnson (JNJ 1.19%) are magnificent stocks that are passive income machines. A dividend stock you can buy and (almost) forget aboutDavid Jagielski (Abbott Laboratories): When p ...