One of the map sets I like to use is the Fiery Dragon Future Tiles Starships by Skeletonkey Games. Some of their tiles are in the image at the left.

Steel Floor:

This is a five by seven tile for use with the game. The numbers can be used as a decorative feature or as traps. Characters entering a trapped square (or being pushed into them) take 10 points of damage. A full version of the tile is here.

Plaza:

Here a a stone floor plaza with a low monument near the center. A full version of the tile is here.

Dark Cargo Area:

Lit by two small lights, this cargo area increases characters defence for low objects from +4 to +8. A full version of the tile is here.