Old signs is a great material to make some cool objects of interior decor. You can use as all these neon letters that can act as lamps at your home, as any other letters from virtually any sign. Besides interior decorating with letters become so popular nowadays that are also plenty of them you can buy in different DIY stores. Even furniture manufacturers produce different cool things shaped like letters including stools and shelving systems. Here are some ideas to show how and where you can use letters in your home decor.