Spare clothes wherever are an absolute lifesaver… spares for adults can also be very useful. Diaper bag, cars, etc.

This is one of the most underrated tips.

My kid is seven now, almost eight, and if we’re going anywhere nice, or far from home, we try to remember to take at least a change of clothes. Kids have an unnatural ability to get dirty at the worst possible time, and especially if you’re miles away from other clothes.