I carry two laptops, two cell phones, Bluetooth headset, camera, etc. etc, and all their associated chargers. Sometimes I'll also bring along a wireless router and amplifier for my aircard.

The key is to try and spread everything out so it doesn't appear like a big mass on the x-ray, but even then that should only be a secondary check and you're on your way. I have some industrial baggies from ULINE to keep the cords from getting tangled, but plain old ziploc bags would work too, they just won't last as long.