Step 1: Crochet a rectangle that is as big as you want your hair bow to be.
You can use any stitch you want, it won't matter.
Step 2: Pinch the middle of the rectangle to make the bow shape.
Step 3: wrap yarn around the pinched middle then tie in the back and cut the tail as close to the knot as possible.
*Optional: if you're making a hair tie, tie the yarn around a ponytail holder before you cut the tail.
If you're putting it on a hair pin just slip one section of the pin underneath the wrapped yarn in the back after it is cut.
Ta-dah! You have a super quick and easy hair bow!