Like the Privacy Scarf [0], which was deemed completely crazy by a landslide, the TV-Helmet (Portable living room), which was created in 1967 is a real doozy.
The piece is part of a "Prototypes" series of sculptures made by Walter Pichler in the 1960s.
While it's an art piece, I can't get over the combination of offbeat humor, satire and unconventional geekery. No one would ever use it, but the idea of it even being put on a head (as in this picture) makes me fall over with uncontrollable laughter.
Source [1]