What an easy project! And completely worthwhile. No more carrying a boiling pot over to a tub or sink of ice.

I went with the brass fittings and hose adapters so it threads right to the garden hose. You don't have to worry about lead in this case because the brass doesn't go into the wort and hopefully if any water does drip from a fitting it falls outside of the kettle.

You could also use clamps and hose on the copper ends. I have found this done several times online. Do whatever seems easiest/cheapest to you, but don't forget about storage and sanitation needs