Why not start as you have, with them all touching each other and then move out gradually with some solid color hexagons eventually taking over? (Kind of like colors beautifully fading.) It would look like a gently flowing brook. Lately I have seen more white (ish) colors which lighten up the whole look of the pieces. If you have even more left over, you can make them individual signature pieces on your other quilts! They could become your LOGO! Be inventive as you have been. Great start, great work, great hobby!