When I was a kid, I used to do blow boxes. Yes, it was the time of the paper airplanes, paper boats, and all other kinds of paper folded playthings. Origami was an awesome pastime then, and now it's making a comeback.
Here's a good way to use blow-boxes -- garlands! I used these cool Chiyogami print origami paper from Muji and some $3 tiny Christmas lights.
Check out this link on how to make them. So easy. Have fun!