12v Power Outlets- Any Suggestions?

[docv]

I suppose it's a sign of the times, or maybe it's a touring thing, but I've never had the need for a 12v power outlet on any of my bikes before. Now that I'm looking to pick up a used nomad, and hit the road for some extended rides, in unfamiliar country, I can see the need for a GPS, and a means to charge my iphone. I've searched the forums and come up empty handed. So I'm appealing to you good people. What have others done? I know it cant be that hard, and there are likely as many ways to rig something up, as there are riders, but I'm sure someone's come up with some better ways than others. I'd prefer not to mount anything perm to my bars and keep it fairly discrete when not in use. Can the Nomad charging system handle the extra draw? Can I tap directly into a hot 12v line or do I need to add a relay etc.? At the very least I figure an inline fuse might not hurt.

What say you all?

Cheers!

Doc

P.S. If you've got any picts of your set up, they'd be greatly appreciated.