I found @myShoggoth’s explanation of the relationship between the Community Task Force and the Our Foundation Task Force useful, and it stimulated some thoughts.
I agree that broadening the funding base of the Haskell Foundation is important, and one thing that I think could make individual donations more attractive would be the ability to direct donations (probably at the level of categories, such as documentation, package development support, tool development, etc.).
But perhaps the Our Foundation Task Force should broaden the scope beyond funding, since I think feeling ownership in the Foundation can go beyond financial support. A couple of ideas come to mind, which I mentioned in a comment to another post: how to develop greater bench strength for contributing to various Haskell packages (i.e., are there ways to help make becoming an open source contributor less intimidating) and how to leverage existing resources to further training (e.g., how can the Haskell Foundation help make it possible to use resources created by companies/organizations like kowainik, typeclasses, and Monday Morning Haskell without disrupting their business models).