I know if it's drawn from an issue on a project, you can, by running an issue report. But if I create a card directly on a Board and it's not tied to a project, task or issue; how can I include that in a report? It's nowhere to be found in the API.
I've always said "Boards is a great way to circumvent using Workfront… while in Workfront." and this is a good example of that.
I like to put all of our admin projects in Boards because usually it's only 3 to 8 tasks, not enough to have to create a project. Instead, I create a tag for each admin project so they organise in Boards. However, I have not found a way to report on our accomplishments after thy're completed.