The previous owners drilled a hole in our tiled bathroom counter for a soap dispenser, but they never installed anything. We're not fans of built in dispensers and would like to fill in the hole. Precisely matching the tile isn't a key requirement as we eventually want to completely redo the bath completely. We mostly just want the hole to be covered up (water intrusion isn't a problem). I don't have any spare tiles nor any information on the type of tile used in this project.
Are there any practical options to install some sort of plug that will be fairly unobtrusive and structurally sound?