Not a lot, my pockets are tiny. Currently I have one tissue.

My handbag/rucksack, however:

A wallet
A carabiner
Paracetamol
Travel sickness chewing gum
A fold up shopping bag with cats and dogs on it
Loops ear plugs
Documents the hospital gave me
Sunglasses
Glasses cleaning cloth
Tiny snacks
Hand sanitizer
Ear buds
A bottle of water
A bag of googly eyes 👀
My passport