The Sunflower Fund is a charity that raises money to get donors for bone marrow transplants. Each year they sell bandanas for this. My weekly quilt group gets some of the leftover fabrics, and we make quilts which are donated back to them. Last year the fabrics were all white background with sunflowers and Mickey Mouse images. Here is a picture of my block for one of them (taken with my cell-phone). I've added similar "solid" colours as contrast.
It's about 40 cm square.