Way too much
Water
snacks
camera
extra batteries
little towel/ extra socks/ umbrella (in case it rains)
paper tissues
bandaids
some first aid kit (not really first aid, but some drugs like painkillers, for when I feel nauseous (sp), when I ate something wrong, ...)
During the summer, if we plan to eat at the park: extra t shirt/ top, to change and not smell sweaty at the restaurant. Also, when it's cooler in the morning/ evening and warm during the day, I'll wear a regular t shirt in the morning and have a sleeveless one in my bag
In the summer: sunscreen lotion
Always: deodorant and perfume, I refuse to smell bad
Also Always
AP + shareholders club card
Visa and lots and lots of money
That's about it. I think