One for each hour you’ll be out, plus a few extra – just in case.
You can stick ten or so in a plastic bag if you’re not going out for long. Wipes are perfect not just for diaper changes, but also for sticky hands and dirty surfaces.
For cleaning your hands after diaper changes when there’s no time or place to wash them.
Many diaper bags come with a reusable changing pad, or you can buy one separately. Some parents like the disposable ones for traveling. A hand towel from home will also do.
Plastic or biodegradable bags
For storing soiled diapers, clothes, and baby blankets. Just make sure your child can’t get to them, since plastic bags (including the biodegradable versions) pose a suffocation risk.
Bottle(s) of formula or expressed breast milk if you’re bottle-feeding
Snacks (for older babies and toddlers)
Depending on the age of your child, this could include a jar of baby food and a spoon, or finger foods. Bring a few bibs as well.