Natural Garland Adorn your mantel with an ode to the changing seasons. Gather colorful leaves and acorns or walnuts from your yard or find them at a crafts store. Drape them on your mantel, along a staircase, or over a curtain rod. How to: Thread leaves and nuts on string or twine to form a garland. Space them out or bunch them together, depending on how you want the finished product to look.