Add a touch of mid-century modern elegance to your kitchen with a vintage sign collection. Look for signs with sleek lines, retro fonts, and vibrant colors that were popular during the mid-20th century. Hang them on a feature wall painted in a bold color like mustard yellow or teal to create a focal point. Pair the signs with mid-century modern furniture, such as a tulip table or Eames chairs, and minimalist accessories for a stylish and timeless look.