Parts Express offers quite a few choices that are quite inexpensive. One option is
these - WBT knock off locking connectors. A set of 4 is $10.99
Of course the other school of thought is that less metal is better, in which case there are bullet plugs, about $10.00 each. Some folks swear by the little plastic bodied connectors you can get at RadioShack. Parts Express offers some like that as well at the very non audiophile price of $.019 ea.

One gentlemen posted a picture of his DIY plugs on here a few weeks back. Kind of a wood block with a single wire outer connection. Somewhat the same effect as the Eichman bullet but much cheaper of course.
You might want to pick up some heat shirink tubing for strain relief.
Have fun, you can experiment with quite a few designs for not much money.
Mike