Wealthy? Middle Class? Got savings? Hate what the government is doing?
Transfer your money offshore! Invest in Euros or Swiss Francs.
Not only is this an effective form of protest that will strike at the war criminals in Washington, its in your own self-interest! War often creates inflation. Other countries aren't paying for this one like the past Gulf War. As the dollar falls against other currencies, you'll profit.
If enough people do this, it will almost certainly create inflation and economic troubles for the war machine; economic difficulties are often a motivator for a people to replace their government.