the pywiki (see http://article.gmane.org/gmane.org.wikimedia.wikidata/910)
looks interesting. It seems Joan Creus is a very fast and active programmer:
https://www.google.de/search?q=joan+creus+python&ie=utf-8&oe=utf-8&a...
so i dare to say that it would be great to have python scripts with which one could set custom properties in Blender with data from wikidata. ( http://wiki.blender.org/index.php/Doc:2.6/Manual/Extensions/Python/Propertie... )
so for example if one could read in the chembox item "density" (when this is realized in wikidata) from lets say iron via pykwiki then one could use this information for a custom property for computing the mass of a volume (as modelled in Blender). This could then be read in e.g. as the mass of a 3D model into Blenders physics engine BULLET: http://www.blender.org/development/release-logs/blender-240/bullet-physics/