What fun! We used heavy colored paper for these hats instead of brown crafts paper as we had it on the shelf from a donation. I cut the squares about 24" on a side and handed them out to everyone. We used a disposable bowl as a form instead of the kids' heads so they could make the crown of the hat. Once the paper is crimped around the bowl just add masking tape or scotch tape to keep it in shape.
We then used markers and crayons to decorate the hats and tried them on. They were offered yarn but it just didn't appeal tonight. Most of them altered the outer edge of the hats--sometimes smaller or fringed.