Really low profile dungeon tiles. They can be snap together to build a big map.
Please test the tiles on your printer, the tolerances are really difficult to take into account correctly.
There's no need to add support material. This print has been tested on a Prusa i3 Hephestos and worked very well.
You may also want to change the texture of the tiles so i added a .123d file with different texture to be put onto the base of the tile.
Also if you need sone dungeon props (treasure chests, doors etc.), i use these ( http://www.thingiverse.com/thing:59110 ) from dutchmogul.