Paper used in this video: two 15cm (6in) squares, one 12cm (4 3/4in) square, one 9.5cm (3 3/4in) square, one 7.5cm (3in) square, green and brown kami (standard origami paper)
Finished model: 10cm (4in) high, 10cm (4in) diameter
Isn't this the perfect video to post just before Christmas time? :)