For men it is different. In the old days it was wallet - keys - and a long pause. Then came the pocket camera - then the cellphone. As I got older it included a pair of reading glasses. Soon I was buying shorts with those gigantic jungle pockets.
As I get older - less is more. It is time to jettison extra cars - scooter - houses - tools. It is time to streamline - even lose a little weight.
I have 4 pockets - and usually it was wallet - phone - glasses - keys. The camera had to ride somewhere in tandem.
But things are changing. Yesterday I got this neat little iphone cover that has a slot in the back. I can carry my drivers license - American Express Card - and my bank ATM card. That's all I need - the wallet is history. This cover is made of rubbery plastic with a flat finish. All of the phone controls work - even the camera lens sticks out - and the sound speakers.
I got it on Amazon.com for $1.40. Yes - that included shipping. Not only does it store my things - but it protects the phone.
Now if only there was an App in my iphone for car keys. It certainly cuts down on "Pocket Clutter."
Added later - someone else beat me to it :-)