Get IShellItem for Quick Access?
See the question and my original answer on StackOverflowNote this GUID (CLSID_HomeFolder) is not officially documented.
You must use this type of parsing name instead for it to work (shell: is a url scheme):
SHCreateItemFromParsingName(L"shell:::{679F85CB-0220-4080-B29B-5540CC05AAB6}", NULL, IID_PPV_ARGS(&psi));