Origami on Shabbat?

Can I could do Origami on Shabbat? Since I've been in Japan, I have rekindled perhaps my oldest connection to Japanese culture (before Mario and Final Fantasy) - Japanese paper folding.

Within seconds, I found an answer:

Rabbi Shlomo Zalman Aurbach, zatzal, prohibits making toys - like a boat, or hat - by folding paper, since it is like making a utensil. However, if the paper was folded into a toy before Shabbat, it is permitted to use it on Shabbat.

And there you have it.