Fisher-Price video recorder PXL-2000
1987–1988
The PXL-2000 was a video recorder made by the Fisher-Price toy company. The innovation was its use of a standard audiocassette instead of the more expensive videocassettes. Auteurs could record about 4 minutes of black-and-white low-resolution video on each side of the cassette, but the high-speed tape rolling mechanism was so noisy that it ruined the sound quality. It took 6 AA batteries to power the camera for roughly 7 minutes.
Additional info:
Indiewire.com - how the PXL-2000 has lived on despite failing as a consumer product
A commercial from 1988: