After looking at this thread I have to say that I cannot believe it. There's so much various stuff that I also had as a kid...
The battle beasts for example... totally had forgotten about these, but after seeing them, I remember... are they easy to get and cheap?
TMNT, had some of them as well... Back in the days I travelled to the US with my parents. Nobody in Germany knew what they were back then and I thought they were super cool and got some. Don't have them anymore though sadly.

Same story for Real Ghostbusters btw.
Batman Helicopter and James Bond car, had them too and a Spider-Man helicopter as well. Also Hulk on a motorcycle, but think I may have sold this 2-3 years ago.
Also the foam spitfires and the Space 1999 spacecraft I had.
And yes, the black smurf. Maybe it still hides on the attic of my parents? If it was so rare, is it worth anything???
Had the Grasshopper, WWF figures and StarCom too. (Sold the WWF figures and the blue ring recently).
Letraset Action Transfers... I loved them as a youngster and had long time forgotten about them. When I remembered them a couple of years ago I didn't know what to search for to find them and so I failed. A friend of mine then bought me a huge SW book which had a lot of old toys reproduced in it as a gimmick and there was also a set of these. They remain sealed albeit being reproductions, but that thingy alone made this book one of the nicest x-mas presents ever.
I remember having had some electronic games but don't remember which, would have to see them again to know. But after seeing the Tandy "graphics", it may have been something alike. Also had some plastic pinball games.
Want to go back to the those times now and watch myself enjoy the toys as a kid from a 3rd person POV. :|