backpacks !! what do they keep in them thousands of people have them all walking about like tortoises they get them stuck in tube trains they knock you about on buses they are in your face all the time I SAY BAN THEM FROM PUBLIC PLACES
Waterproof overtrousers, spare pullover, map, compass, binos, camera, small first aid kit, plastic bags for picking wild mushrooms or watercress, bottles of water (food & coffee for longer trips), glucose tabs, insect repellent.
Gym kit. What should I do, carry my sweaty smelly shorts around in my arms, ready to drop into your lap when the train stops? Or my sopping-wet shorts if I've been for a swim? Mmmmm, nad-sweat and swimming pool water, just what you've always wanted!!!
Think yourself lucky, I used to carry a cello around in a soft case... the floor-spike is unprotected in such a case!!! Shins would occasionally get accidentally jabbed... only if they were rude people who barged into me though.
Rucksacks are the tall person's revenge for shorties with umbrellas.