Make funny faces with a felt pen. Gradually add brown sugar, beating until blended. Add flour and salt, beating until blended. Stir in vanilla.
Place pretzels rods on ungreased baking sheets.
Press a ball of dough onto cut end of each pretzel. Press dough firmly with a fork to resemble broom bristles. Bake at 350 for 10 to 12 minutes. Place brooms on wax paper. Decorate as desired with colored frosting.