Wanted to share some information with you: maybe this can be of some interest for those creative minds of yours. As you know very well, OpenData portals go on developing: last one online is the EU Open Data Portal, hosting a “growing range of data from the institutions and other bodies of the EU. Data is free for you to use and reuse for commercial or non-commercial purposes. By providing easy and free access to data, the portal aims to promote their innovative use and unleash their economic potential. It also aims to help foster the transparency and the accountability of the institutions and other bodies of the EU”
To this day there are 5937 datasets you can browse.
Here you can find the data publishers.
Here you can find their applications.
Hope this can be of some source of inspiration!