Shelves or?

I cut a walnut tree down and helped a woodworking friend with an Alaska mill to make slabs out of it. He didn’t want the outer pieces but the wood was so pretty, I just couldn’t turn it into firewood. So instead I let it set for a few years and it’s now completely dried. I have 10 pieces like this but I’m still not sure what to do with it. Ideas?? My skills/tools are more in the tree felling area and less in the woodworking area so simpler ideas are probably better.