I'm just making an Converter from OpenStreetmap Files to a multilayer SVG Inkscape offline Map.
For this map I need Symbols (Various Icons you find on every map) and Patterns (eg. Forest, Cementry) for the map.
The whole Programm will be under OpenSource here in SF and the Icons will belong to the first StyleSheet (there can be more than one depending on what shoult the map display).
There are some ready to use Symbols in the Web. These can be used as a basis but must be extended.
Knowledge in Openstreetmap is helpful