I'm working on collating as many sources of Canadian federal data into a single relational database, and exposing that data via a public API.
Given the sources of this data, I'm pretty sure I'm not even allowed to profit off of this. Not really a problem as I'd be doing this in my spare time anyway.
The data-visualization side of it (e.g. https://iscanadafair.ca/data-visualization/example-usage/) isn't my strong-suit, but it's fun to muck around in regardless.