Found recently a used, working Mattel Intellivision for sale and decided to get it. Seller said this unit is from 1981. Also got the game "Space Battle" for it which was called "Space Cadet" in the episode "Nobody Does It Better". Pretty cool retro videogame device, never played Intellivision in it's day so it's completely new system to me.
Fun to play the same game Bonnie and Michael played in that episode

As Michael Knight said: "You're never too old to play videogames" and I agree at 42 years old

Here's few photos, placed the Hotwheels 1/18 KITT next to the Intellivision to give an idea about it's size. Funny how they both are from the same company, Mattel
The box of the Space Battle game:
Screenshot of the Space Battle game (taken from good old CRT TV screen)

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Love the design of the game cartridges, when placed like this, they remind me of KITT's dash top countdown
Earlier got also new "Retro Arcade" game with 200 games in it. Similar looking thing like the Pacman tabletop videogame Devon got in the episode mentioned above. Unfortunately, according to info I found online, this game probably doesn't have Pacman. Haven't verified that though as I haven't tried yet all games. There's at least not a game titled Pacman in the games menu I went through.
Hope to find the Auto Racing -game for Intellivision as well.