Avoid undersized rugs because they disrupt the cozy, grounded vibe central to fall 2025 design trends. Small rugs can fragment a room’s flow and kill the visual warmth earthy palettes and layered textures create. Instead, opt for larger rugs that unify furniture pieces and anchor the space. Complement rugs with natural, warm tones and rich textures to maintain the season’s retreat-like feeling. Choosing the right rug size elevates your room's comfort and polished look this fall.