Stamps? What do you need stamps for? Do women often find themselves in situations where they need to send out emergency mail? The stamps stay home in the drawer, that’s where I am when I send out mail, no need to carry any around.
Address book? That’s what a cell phone is for. Most cell phones have fields to enter more data on a contact than just the phone. Some people just carry around a pda, or a combo phone/pda. But address book? This is the 21st century! I use a rather small and light phone. I had a nice Treo once that broke the first time I dropped it, now it’s small, light, and cheap from now on.
In fact, you also don’t need most of the cards we carry around. I have plenty of cards that stay at home, ones I don’t use day to day.I used to think “I have to keep my library card/this card/that card in case I need to stop there” then realized I was never stopping in those places, and I only used one credit card day to day. And usually if I did it was a planned event “I’ll go to the library today” and I’ll just bring it that day. Keeping all those extra cards at home halved the thickness of my wallet. It’s safer too in case your wallet is stolen, only one credit card company to call.
You must let go! Re-evaluate again what you need and don’t need. You only went through one round, simplify more! 
I keep my wallet in the front pocket, I think it makes it harder to steal. I have not really seen any studies done on this though.
Ok one of the benefits of going bald young is that I don’t need a comb or brush. So score one for me.
Change is rather annoying. But that’s a reason to use your credit card more often (especially if it’s a cash back one like mine) or else when I get home I just dump it in a bank. I find the change falling out phenomenon depends on which pants I’m wearing. Dress slacks have this problem more often than jeans.
