If you are coming up short, and you can't downsize consider going double breasted pocket shirts. BOOM! two extra pockets. They were a mainstay of my college days. I looked better than this old fart.

Re: clams- I just ditched the wallet and have a $.02 clip on my cards (don't really ever carry cash). Then I put my keys in the same pocket and my phone in my other pocket. I still am concerned about getting ball/brain cancer with my phone so I try to turn it off most of the time or put it on my desk/in car when I am stationary. If you are going on short trips, leave the cell. YOU DO NOT WANT BALL CANCER!