Our other instructable for hollow horns was very wordy. So here's a different and easy method using Crayola Model Magic. Although there are eleven steps, there is not much reading :-)
Cost: about $25.
This method results in horns that are just as light, but definitely not as strong as the ones in our previous 'able. Painting these horns with foam glue, or a mix of foam glue and PVA glue, will make them a little stronger. Keep them short; no longer than these. If you want long horns with more than one curl, try our other instructable.
We make our horns hollow all the way through, because we like messing about with installing lights into them. Happy Halloween!