Long days — work plus evening event, school run plus errands plus dinner out — often produce wardrobe emergencies. Spilled coffee, broken heel, surprise rain, cold turn in weather. A small backup kit in your bag prevents trip-ruining problems.
What to pack
Stain remover wipe or pen. Spare pair of tights. Folded ballet flats. Small umbrella. Hair ties. Hand cream. Plasters. Spare contact lens. Each takes minimal space.
Where it earns its place
Most long days you don't need anything from it. The 5-10% of days you do, the bag saves you from major inconvenience.
Build the kit once. Refresh quarterly. The peace of mind alone is worth the small bag space.