I don't share origami projects enough. This Origami hat tutorial isn't a very practical fold, but it's a fun fold. It would be a great activity to do with kids.
This hat is neat, because it can be made in to 4 different hats. They all start the same; you just keep folding until you get the hat you want.
Here you have a basic newspaper hat
A party hat
A Printer's hat
A Bishop's Mitre
And here are my video instructions