I also struggle with original ideas. So I have become content to find patterns and fabrics that i see in magazines or online and make something like those. If I make the quilt it is 'mine', and as long as I am not selling it or claim credit for the design, what's the big deal? As I have gotten more quilts under my belt I am finding it easier to modify something that inspires me to make it a little more original. Relax and just try to enjoy whatever you are making. Those sparks may come over time.