So. You really made me Google it...

( i mean, yes, I got the general idea from the pic you posted, but still had no idea what that Mattel thing was all about, and I thought - foolishly so it appears - that the thread was about actually viable options...

But I digress...)
Frankly, even the probably-non-measurable number of nanocalories it took do
that weren't really worth the effort.<
sigh> What can I say... if not immediately dashing to the nearest movie theater to see a (freaking)
Michael J. Fox movie about time travel in my junior year of college requires the turning in of a card of any sort, I'd consider it a badge of honor.

(And when I did eventually see it, I was old enough to think it was "cute", albeit mostly ridiculous...)
Now, if we'd been talking positronic robot brains or lightsabers, I might've caught on, even if I'm a little too old to have ever wanted, much less owned, a non-functional pseudo-version of even one of the latter... And for that matter, even by 1977 and thereabouts, I was several years too old to have been caught dead in a ditch owning a model Starfighter, a Darth Vader helmet, or any of that goofy paraphernalia. (By then I did however already own a few years of Byte back-issues and at least a year's worth of 73 Magazine, if that counts for anything.

)