My second baby is now four months old and I've transitioned her from the co-sleeper in our bedroom to the crib in her nursery. But other than sleep - at night and for naps, she actually doesn't spend much of her time there. More often than not she's in the main part of our house with my toddler and me, watching us play and interact, eat our meals, and go about our day.
My first daughter, on the other hand, spent a large portion of her time in the nursery - rocking, playing in her crib, and of course, sleeping. I remember designing her nursery and wondering to myself, "Should I make this a soothing, restful retreat for sleeping purposes or should it be a more stimulating environment?"