The Props of Space 1999
Where Star Trek's communicator may have predicted the cell phone, Space: 1999 predicted today's PDA/cell phone combination machines: the commlock was the connection between individual users and the central computer system on Moonbase Alpha.
The Space: 1999 stun pistol was also a vital prop throughout the series. For a sci-fi hand weapon, it is based on a totally unconventional design (in fact, it appeared to be modeled after a staple gun).
In prop design, Space: 1999 literally did for television what Star Wars did for the motion picture industry. It set a new standard that all others had to meet.
The EVA suit: