Creating a consistent routine will allow your kids to know what's expected of them without having to nag. Our routine consists of outside playtime right after school, snack, homework, then free-time for as long as they have before dinner and extracurricular activities begin—the more efficient they get through homework, the more freedom they have to do what they want.
Keep homework supplies at the ready to avoid any delays. Despite having a desk in their bedrooms and the playroom, most homework is done at the kitchen counter. I keep pencils, scissors, and crayons handy in a nearby drawer the kids can easily access on their own.
Occasionally, errands or appointments keep us from going straight home, so I keep a homework kit right in the car. We have a clipboard that slides open to hold extra paper, pencils, and homework supplies so we can stay on top of our routine, even on the go.
Avoid the unorganized drop zone and be sure to have a designated space in your home for lunch-boxes, backpacks, shoes, and jackets. Make sure your kids know part of the after school routine is getting their belongings in order for the next day.