Budget decor ideas that make a big impact include smarter lighting, upgrading rug sizes, and fresh paint. Swap a small rug for a larger one to anchor your furniture better. Repainting walls using modern colors or the two-tone wall trick adds instant style without high costs. Add layers of light with plug-in sconces or table lamps to improve ambiance. Simple furniture rearrangements open flow and refresh your space. These cost-effective tweaks combine comfort and function, transforming rooms quickly while avoiding expensive renovations.