The previoius owner of my home had intstalled a bar sink in the counter but never completed the plumbing. It's quite far from the water and sewer connections, so it would be very expensive to finish the installation. I've decided just to remove it and I'd like to know if anyone makes a sink cap or slug to fill the hole. Reworking the counter top would be almost as costly as plumbing the sink.
I have seen wooden caps for bar sinks, but I have no idea where to find them, and they allow for faucets anyway which I assume that this bar sink doesn't have.
Why don't you just find something like a butcher block cutting board and screw blocks on the bottow to fit down in the sink and cover it with that?
Lots of ways to skin that cat inexpensively.