Just think of it – hanging around in midair working on your argyles, with balls of yarn hovering around your head. You could leave a needle floating in place while you reached for your cup of tea. Or would it be a tube of tea?
I think I'll post that one on the Completely Pointless group on Ravelry. From what I've seen of that group, I suspect I'm not the only one who has thoughts about weird things. Maybe they'll share them.