how to make dragon horns?

We're taking our children to Scarborough Faire this weekend & our 7 year old wants to wear a dragon costume. I've got everything up together but what to do about the horns is stumping me. Any ideas? We're going Saturday, so I've only got tomorrow to do it so it must be easy.

Thanks mommas!

Crayola model magic may work (I've found it at Michael's). It's very easy to sculpt - you could make two long ropes and wind them around each other making a horn. I have colored it with paint and marker. It dries pretty quickly. It's very light weight and you can hot glue it to the costume or a head band.

Felt may work too. You could sew or glue it in the shape you want.

use tin foil tear of a piece at a time and mold it?
model magic

You might want to check out your local dollar store in case they have something that might work. I'd also just go to the craft store and walk around the different departments just to see what they have. You might find something in an aisle for something completely unrelated that would work :) Good luck and have fun!