People often ask us if we ever get to spend good, quality time one-on-one with each kid, since we have so many. Well, the answer is, not enough, but more than you think. Evan is the easiest - we've made sure to work in Evan time in each day, usually once the babies go down for naps or bedtime in the evenings. And he has special outings with each of us over the weekends.
The triplets are trickier, though, because they are all on the same schedule, and right now they get very jealous if I give attention to one and not the other two. So occasionally, John or I will grab one and get out of the house with her/him. Kate likes to take walks up and down the sidewalk out front. Willa prefers to go upstairs with me, and just hang with me in my room. Oliver often gets to run errands with John and Evan.
As they get older, and start to develop their own interests, we will have to work out a more formal system so that they can each have that special time. But for now, spontaneity works.