I'm hereby throwing some suggestions out:
(1) What about offering a reward for insiders to come clean? There must by now be many people in the FBI, CIA, NSA, NIST, U.S. Armed Forces, etc., who question the "official story". Whether it be the "anthrax" farce, the anomalous collapse of the towers, the Olson phone call that apparently never really happened, or even the still unknown person that Norm Mineta recalls as having taken stand-down orders from Cheney, some of the people involved in this madness must have access to damning, indisputable evidence against the conspirators. On the chance that some of these people would be inclined to come forward, but are holding back mainly for fear of losing their career, who knows, maybe a reward may make it happen.
(2) What about offering a reward for evidence that Barbara Olson (or any other victim supposedly killed that day) is still alive? If Barbara Olson is still alive, maybe her maid would like to collect a million dollars to tell us about it?
(3) Where would the reward money come from? Maybe from both domestic and international donors? Since many people all over the world have a stake in this, I don't think it's unreasonable to speculate that many people would be willing to chip in, if it will help us save ourselves and the world from the agenda of these madmen.
(4) What about a push to take the case to Europe, the UN, etc.? Let's face it, in one way or another, the whole world has a stake in what happens wrt 911. On the basis of lies, the U.S. government has started a hopeless war against Afghanistan and has involved NATO in the mess. Surely the European families of NATO troops presently in Afghanistan would like to know with certainty if it's all a lie. Thus 911 truth may have the power to finally put an end to the world-threatening NATO monstrosity.