I ordered a straight copper tube from Bargain Fittings with my ball valve and just curved it gently down and its maybe 1/4" off the bottom of the keg. Works perfect and I didn't have to fab anything up. I was initially worried about creasing it but as long as I curved it gradually along the whole length it worked great. One thing to keep in mind is that you'll want a hose connected to the barbed fitting to siphon any wort below the level of the ball valve.
Kegged: Hoppy Amber, ESB, Weizenbock, Breakfast Stout, IPA
Fermenting: Yooper's Oktoberfest