There are a bunch of diaper bags targeted at hip dads. Note I am neither hip nor a dad, but I do have to carry lots of gizmos when traveling.

I have a Jack Spade bag, which looks like a normal backpack, but inside it contains a bunch of neat little mesh pockets intended for baby bottles & such, but also happen to perfectly fit all my cellphones & chargers. Also included was what I guess was a changing pad but also doubles as a nice wrap for laptops & tablet.