I love to sew; but most people do not! Especially large bulky items like drapes.
The drapes in my kitchen were a bit too short. I had already let the hem out as far as possible and they still were not long enough.
I got out some plain shower curtain hooks and put them on the curtain rod. I hooked the curtain hooks in the shower hooks and it added the extra inches I wanted. I have a valance hanging over the drapes that keeps the shower hooks from view.