Freeware: Binclocken

EarthquakeX 1.0EarthquakeX is a port of an old prank/joke control panel for System 7 called Earthquake. When installed, your Macintosh will experience random earthquakes. This version is a bit different from the old one, but the principal is still the same.

BelchX 1.2BelchX is a port of an old System 7 extension for the Macintosh, called Belch. BelchX is an invisible application that will cause your Macintosh to have a case of indigestion: it lets out a nasty belch every once in a while.

Conan the Librarian X 1.0Conan the Librarian X is a prank app where Conan tells you to shut up when the incoming sound on your built in microphone reaches certain levels. This is a port of a very, very old System 7 extension for the Macintosh.