Here's a .pdf that I came up with when I saw your posting. Not quite as cute as Amma's, but could be serged together and around the edges, if you didn't want to (heaven forbid) quilt it...Should go together really easy. And, if you did want to make it a quilted runner, that would be easy, too.
Also, if you do a search on this site for Ice Cream Cone, there is a cute Ice Cream Cone Quilt posted.
Good luck and have fun!
Heidi