A wet umbrella, muddy hat or damp pair of gloves can turn a tidy day bag into a soggy mess. The fix is simple: give wet kit its own temporary home.
Keep a small, reusable waterproof pouch or suitable bag somewhere easy to reach. When you come indoors, shake off excess water and put damp items inside rather than against your notebook, spare layers or electronics.
Don't treat the pouch as permanent storage. As soon as you get home, empty it, spread the contents out to dry and leave the pouch open too. Check pockets for forgotten damp bits before putting the bag away.
For longer journeys, keep clean and damp items separate so you can find what you need without unpacking everything.
Field tip: Contain the damp on the move. Air it out at the other end.