I remember the Tamagotchi. We were obsessed back in the 90s and they caused a hell of a problem in the playground and in the classroom.
I remember telling my dad that I wanted one of these because it came with a watch (I wanted a watch at the time) and it came packaged as a toy! Bonus!
Notes went home to parents, kids got beat up, kids failed in class cause they were constantly running to the toilet to check their Tamagotchi's without having it confiscated.