Probably too much.

On a typical day...

Cell phone
Leatherman tool (usually a Juice CS4 or a bladeless Fuse if I'm going somewhere that prohibits knives)
Car keys (a Benchmade Houdini keychain is attached)
House keys (a CPR face shield keychain is attached)
Spyderco Delica (unless I'm somewhere that limits knife blades to 2", then it's a Spyderco Chicago, or no knife if prohibited)
Fenix PD20 flashlight
Wallet
Pen
Notepad
Small first aid kit (band aids, alcohol wipes, butterfly sutures, small Cellox pack, a couple of sterile gauze pads, and a couple pairs of nitrile gloves...this all fits in a surprisingly small space)
Quick Strip with 4 rounds of Speer .38 Special +P 135gr SB-GDHP in a Side Guard pocket pouch if I'm carrying my gun
Whatever cash/change I have on hand

Oh, and this is all in my pants pockets (and they're not cargo pants).