Dad's binder for my prose is full, so I'm making him a new one for Father's Day.
I'm using a 1 1/2" white 3-ring binder with a clear sleeve to hold inserts for the cover and the spine. I have printed color images, then cut them out and stuck them on black cardstock. That usually makes it stiff enough that I can slide it down inside, because the sleeve pockets are pretty snug.
This is the spine insert. It has the title and my name bracketed by two sun-colored unicorns.
This is the cover. It has the title and my name above a yoga pose silhouetted against a sun. I'm really pleased that I managed to find images that echo each other's colors.