I'm often accused of being a Luddite -- mostly based on my fervent and affectionate clinging to several physical objects that are quickly becoming cultural artifacts: the ink pen, the paper book, and the vinyl record -- but those items haven't been the only 'evidence' my accusers have historically cited.
It included a copy of the book, of course, but also a few superuseless promotional items, including a black highlighter pen, and this version of the Superuseless Superpowers e-book.