I would pick some of the fabrics you are talking about and add some batiks it mellow it out. With the batiks, you can create sky, water, grass, butterflies or whatever you want. Or use the woodsy fabrics as the centers of big stars and pick some coordinating fabrics for the points, Or, make a quilt with an 8 or 10 inch wide cut that goes all the way across the width of the bed, or at least the top. Alternate with a calm smaller separator strip, then put in another wider strip of a different fabric or even the same. This was one I did with some grass fabric. I love how it turned out. This one is only one width of the fabric for each band, so you would have to do drop borders, or blocks.