Dear wikidata lovers,
it took me some months but I'm finally more than happy to announce you that my prototype of a resources mapper based on wikidata data is now online! Inventaire.io https://inventaire.io
It offers the possibility to make a list of books you have using either the ISBN or the wikidata Qid. So far, the best use of wikidata's power is authors' books lists. Example here with Mr Q535: https://inventaire.io/entity/wd:Q535
You can find the project's code here http://github.com/maxlath/inventaire but for what is of wikidata, I extracted the helpers I use in a separated library https://github.com/maxlath/wikidata-sdk (javascript). Hope it might help others.
I would be delighted to have your feedback on all that :)
Bests,
Maxime