By multiple rugs and space them about 6" apart or have them sewn together to create one big rug. It's a great way to fill a huge space for less. I love how the three rugs in this room create conversation areas while adding another interesting texture with the peak-a-boo of the hardwoods in between. It makes the space more interesting than if it was one large area rug.

And don't think you can only do it with solid rugs. It would be fabulous with stripped or geometric rugs. There are so many affordable options.
So stop saving and start shopping.