The Electro-Box, also known as the 'Lectro Box or simply the Box, is a sentient machine.
Built out of spare radio parts haphazardly thrown together by Mickey Mouse, the Electro-Box is a small machine that sends out mysterious rays that can cause any number of thing, from turning cannibal plants into lovesick people to making the White House appear on your lawn to materializing your long-dead ancestors before your very eyes. The Box appears to have a mind of its own and a slapstick sense of humor that makes it all the more unreliable, although it sometimes complies with its user's wishes.
Behind the scenes
The Electro-Box was only first seen in the 1943-1944 story The 'Lectro Box.