What is annoying in power supplies.

The thing that annoys me often are cables.  Network cables, USB cables. But the worst are power supply cables, and AC's. There are many small devices, each taking a few wats, but each must have its own power supply cable and very big AC. It's a hard task to plug all of them. Big plugs simply collide.

There is a modem, router and wireless phone, that is 3 AC's. And handy charger (4), and battery charger (5). 

Would be that so hard to develop one standard for supplying power to small devices? There could be then one AC with small cables for all devices plugged into it (such as network cables to switch).  Such universal power supply could contain battery charger and could be less power-consuming.

I would be most pleased having such a device:

A wireless VOIP router connected to wireless handset (I have VOIP router and wireless phone as separate device, with phone cable connecting them and surplus power supply cable), containing slots for charging batteries and sockets to plug in power cables to other devices (such as handy charger etc.). 

I thing USB gadgets are so popular because they do not require additional power supply :)

Every AC means surplus power consumption, and additional costs. Computer-dependend devices such as monitors and printers could also drain power they need directly from computer's AC, optimally via the same cable they send data, so there would be another cable less.