Using the yellow dough, make four legs, a head, and a body.
With the black dough, form four little disks and attach them to the end of the legs.
Roll out a tube of white insulating dough and wrap it in a ribbon shape. Make a disk and place the ribbon on the disk to create a scarf.
Next, attach the legs, scarf, and head to the body.
Make two triangles with yellow dough for ears. Use the black dough to make two antlers. Attach the ears and antlers to the head.
Next, make two little ovals out of black dough. Make a small white disk for the base of the nose. Attach the LED by sticking the shorter prong into the base of the nose and the other into the scarf.
Attach the battery pack by inserting the red wire to the longer LED prong and black wire to the other. Turn the battery switch on to light up your reindeer.