Ikea's Ragna fabric. It's a 56% linen/44% cotton mix that's 45cm wide and hemmed at the sides. And it's just $4.99 per metre.
I first bought two 1 metre lengths in the white and natural colourways and then hemmed them to use as hand towels in the bathroom. Loved them so much went back and bought a few longer lengths to use as table runners. Today I dipped into a one metre length of the light blue for a third towel.
Would also make great placemats and napkins. If ever there was a beginner's sewing project, this is it.