Furbys

Furbies are a robotic pet from released in 1998 by Tiger Electronics. They sold very well upon their release because nothing like them had been seen before.

Now, Furbies are still a beloved toy to many. They were rebooted in 2005, 2012, and 2016, but their original vintage form (shown above) are the most well known. You would think they are the most valuble, but that's actually the 2005 Furby, because not many people bought them upon release.