The artist Vladar’s putting together (mostly) generic fantasy map-pieces.

It’s CC-BY, so it’s open for commercial use. I’ve commissioned it for my own RPG, but all the pieces should work for anything faintly related to Gygax.

There are more pieces to come, and of course it’s open, so if anyone out there can do drawing, feel free to add a wall/ mace/ dead goblin in a new file.