I have stronger Atari and Intelevision memories than I do of Nintendo or Colecovision, etc. Sadly, I still recall that my favorite play call for Intelevision football was 9-3-1-7, a screen pass to the receiver at the top of the screen.
I did play a lot of Tecmo Bowl, though, I would be the Giants. Lawrence Taylor was fast enough to block PAT's and Field Goals....and, if Simms was having a bad day, I could put Hostetler in, he was too fast to get sacked.
For arcade games, Ms. Pac Man, Galaga, Elevator Action, Decathlon, some insane game called Tutankahman......Scrambler.....dragon's lair.....etc...
In remember Koosh Balls, too, but I think that was more of a 90's thing.
Tough to top the CD player, when it comes to serious replies to this.
The rubik's cube is one of the first things that enters my mind when I think of the 80's. Nerf stuff existed before the 80's, I believe, but I loved that stuff.
The Joshua Tree was a great 80's invention, sure. So were Neumann padded and fur lined football gloves, perfect for playing football in the winter.
Like a lot of you, I could go on and on......