It turns out that aCzechoslovakian sci-fi comedy from the 1970s imagined the selfie stick four decades before the accessory became the must have travel accessory. Reddit user ZaHuBa posted a GIF of the fictional gadget, which appears early in Zabil Jsem Einsteina, Panove. The tiny camera behaves like a retractable steel pointer, with a small lens and flash at the tip. The bottom of the stick instantly prints a fully-developed photograph — far faster than a Polaroid.
IMDB summarizes the plot as follows: "This futuristic science fiction comedy features an atomic bomb blast that causes women to grow beards and lose the ability to have children. A summit meeting is held at the United Nations, with the proposed solution of building a time machine. The decision is made to travel back in time and murder Einstein, with the hopeful result being that without the noted mathematician's research there will be no atomic bombs."