Sure, you can buy packaged bias tape at the fabric store. Or, you can make your own using a handy bias tape maker (check the notions wall). Melissa from Melly Sews blogs at Keeping It Simple with another option – a cardboard bias tape jig so you can make bias tape in any width you like. For those not already familiar with how to stitch it down, she also includes instructions for sewing the bias tape down to finish the edge of a piece of fabric. Go to her tutorial at Keeping It Simple.
[photo from Melly Sews on Keeping It Simple]