You need plasticine, spaghetti and a little free time:
1.Make a ball from plasticine (you can use the softer homemade kind).
2.Use your fingers to shape the body. Pull the nose and slightly flatten the base.
3.Add the eyes and the nose. Insert the spaghetti pieces to make the needles.
Oh, yes, I almost forgot another plasticine activity: experimenting with colors. You can use plasticine to mix different colors and make new ones:
(you can print out the examples HERE.)