These companies can turn idle cash into a passive income stream.There are lots of ways to invest $1,000 these days. You could take a flyer on the latest cryptocurrency or hyped AI growth stock. Those bets could turn your investment into a lot more money, or they could lose some or all of your investment. A lower-risk option is to invest that cash into an income-generating investment like dividend stocks. While you can still lose money investing in dividend stocks, they've historically been a solid investmen ...