Dan, your pieces are amazing! I love the concrete photo frame idea - very unique! Your table with the aggregate looks fabulous - and I know how hard it is to grind down the surface to reveal that! you did an awesome job! My husband and I built a fireplace mantle out of concrete - see photo. It turned out pretty cool since it was almost the first thing we cast out of concrete. Since then we have done some countertops with aggregate.
Anyway, I've seen little concrete outdoor benches and sinks on display/for sale at our local Buddy Rhodes concrete supplier. They were just pieces that a local had done up and displayed to show some possibilities.
Maybe you could contact your local supplier about displaying some of your pieces.
Shauna
Timber Creek Design Wood Signs