Blob Remover

The first thing that struck me about the Prusa MK3 was the surface texture produced by the powder coated print bed. I've had a few prints that had minor imperfections on the top layers (blobbing etc, especially around text) and was using the bottom of another print remove these.

Why not just make a small tool instead?

Obviously, you'll need a textured bed in order to get the required surface (Prusa or otherwise), then simply use the tool in place of sandpaper/files to remove surface imperfections. It's not as harsh as sandpaper, but there's enough of a texture to remove small artefacts.