I also remember an episode of "Night Gallery" where the antique shop owner realized he owned a mirror whose silvering, when scraped away, opened to a portal to the dinosaur age. He also happened to have a pain-in-the**** wife, played by Zsa Zsa Gabor, who drove him crazy and nagged him at every turn.
He scraped off enough of the silvering off the mirror, thus revealing the vegetation and dinosaurs on the other side, then got rid of the wife by tossing her yapping poodle through the portal, sending ol Zsa Zsa running after it. Needless to say, the husband then repainted the silvering.
Again, another way to send certain serial killers into exile!!! HA!