While looking for craft show booth ideas, I ran across several that had super cute pennant banners decorating them. I had to make some for myself! Here's how I did it!
To make two 3 yard long banners, I bought 1/2 yard of 4-5 different fabrics and two packs of double fold bias tape (3 yrds long).
I created a plastic triangle template with a 6 inch base and 10 inch height. Who knew I'd ever use that geometry I learned in high school?
Fold a piece of fabric in half, right sides together, matching the selvedges. If you place the base on the triangle along the bottom edge of the fabric and cut, then turn the template upside down so the point is at the bottom edge and cut, you should be able to cut 10 triangle pairs from a 1/2 yard of fabric. You're cutting through 2 layers of fabric, so you should have two identical triangles. Keep the pair together! 5 different fabrics will leave you with enough extra triangles to start on a third banner. (Sorry, I didn't think to take pictures of this step!)
With right sides together, sew along the long sides of the triangles with a 1/2" seam allowance. Leave the base open. Trim the seams to 1/4" inch. Turn triangle right side out and press. Use a scissor point to get a nice point on the triangle. Repeat for all triangles. (It really doesn't take as long as you might think.)
Starting about 7" from the end of the bias tape, pin the base of the triangle inside the fold of the tape. Pin the next triangle approximately 3/8" - 1/4" from the next one and so on. Stop about 7" from the other end of the bias tape. The first banner I did, used 19 triangles and the second only 16 triangles. It just depends on how you space them.
Stitch along the open edge of the bias tape, removing pins as you go.
Super, super easy! And kind of fun! Can't wait to put these on my tables at my craft shows this fall!