Cut cardboard tube to about 3". Cut an additional piece of cardboard from the remaining tube to use for the head, about 2" square. Paint cardboard and tube gray and let dry.
Cut a 1" piece from each of the gray chenille stems for the horns, set aside. Cut the two long pieces of gray chenille in half so that you have 4 equal pieces. Coil each of the 4 stems around the handle end of a paintbrush and slide off, these are the legs.
Cut the white skinny chenille into 3 one-inch long pieces, save the remainder for another project.
From the 2" square gray cardboard, cut out the head. The basic shape is a triangle with ears. Use the Sharpie to add eyes, eyebrows and a nose. Glue the horns at the back and between the ears and the white chenille pieces as the goatee.
Glue the head to the front of the gray tube. Glue the legs inside the bottom of the tube.