I have never used an umbrella. Being extremely short, one is always afraid of where one might poke other people with it by not being able to see. Added to which, coastal areas always have a fair breeze, making unbrellas largely impractical. I don't use a walking stick, but if planning a longish hike, I have a couple of rather fine walking staffs.
TIL that one should never mix bleach and toilet cleaner. Unless one wants
to clear out one's sinuses and wash out one's eyes. (cough, sputter)