Turn your bathroom into a steam room, recommends William Sears, M.D., pediatrician and author of The Baby Book and dozens of other childcare books. Run a hot shower, close the door, and sit inside with your child for 15 minutes before bed and again for 15 minutes in the morning. The steam helps loosen chest and nasal congestion, making it easier for kids to cough or blow it out. To keep your kid from getting bored, bring in a snack or books. While you’re in the steam room -- and if your child will let you -- drum on his back and chest (where the lungs are) to help break up congestion there. Use your open palms and clap harder than you would if you were burping him, but not so hard that it hurts him.