Scrappy means a large variety of fabrics to me. They do not need to be random. I am currently making a scrappy quilt focusing on three main colors chosen to go with a border fabric. I am using about fifty different fabrics. In the past, I would have chosen just 3-4 coordinating fabrics. I love the shades and textures that you get by using a variety of fabrics.
A sampler plate sounds like lunch to me.