When preparing for the arrival of the littlest member of the family, a crib is usually the largest of the big-ticket items on the shopping list. And if you’re looking for something that is not only eco-friendly, but also features a clean, modern design—then that ticket often gets a great deal bigger. In the past we’ve shown you some gorgeous, green cribs—and in many cases the price tag has been in the region of $1000. But for new moms looking for something a little more affordable, we’ve rounded up six delightfully modern and eco-friendly cribs available for under $600.