My bag is compartmentalized, which makes things easy to find and easy to restock.
Easily accessible (outside pouch)
• terry cloth towel or handkerchief
• pacifier or teething toy (for an infant)
• toy or stuffed animal for a quick distraction
• bottle (infant) or juice cup (toddler)
• snack (toddler)
You have to be careful about what’s in the bottle or juice cup, you don’t want it to go bad. As a baby, I kept it empty, with a measured powdered formula and water bottle on the side. Now I keep the actual juice cup empty, and have a sealed juice box or bottle (the kind that’s okay to keep at room temperature) with it that I can use to quickly fill the cup.
Changing station (I keep all the diaper stuff in a Skip Hop Pronto Changing Station. I’m not big into name brand children’s products, but this thing is awesome. Having all your changing items self-contained and easy to pull from your diaper bag makes a change so much easier.).
• changing pad
• diaper wipes
• 3x spare diapers
• Hand sanitizer.
• Ziplock bag for dirty diapers
For food, with an infant you can get away with just having powdered formula and a water bottle (I use a Britta bottle with a built in filter). As they get older you start stocking the bag with those pouches of pureed food, and then later it’s juice boxes, trail mix, etc., etc. Just make sure it’s stuff they’ll actually eat, and you have enough calories to keep them happy for a day. Then put another 48 hour’s worth of food in the supplemental bag. The last thing you want in an emergency is a fussy child.
Clothing – I buy three cheap changes of clothes in each size from a local consignment shop – one for the Dad Bag, two for the supplemental bag. If they last until she outgrows them, I donate them when I go back to the consignment shop to buy the next size. If they get lost, thrown away, or ruined before then, no big deal. Don’t forget a spare jacket or sweatshirt, hat and gloves in the winter, and a spare pair of shoes (toddlers). It’s amazing how quickly and how often they’ll need a change of clothes.
Small first aid kit w/children’s Tylenol (fever), diaper rash cream, gripe water. If you can get a prescription for APNO (all purpose nipple ointment), get it – it’s like windex, that shit works on everything.
Pocket tool (cheap mini Leatherman, the scissors are very handy), headlamp (ever try changing a child in the dark?).
Other miscellaneous
• Disinfecting wipes (for when they inevitably drop something they’ll later put in their mouth)
• Travel/camping tray, bowl & cutlery (more important once the kid is eating solid food)
• Blanket
• Duct tape
• Entertainment items – this seems superfluous, but becomes very important as the baby gets older; in an emergency you’re going to want the kid calm and well distracted.