I had it strange growing up as my mom never really had me focus on a line of toys all that much. I'd get a few Star Wars figures and X-Wing, some GI Joes and their vehicles, He Man at least had Castle Greyskull, car (argh) Voltron, a Robotech valkyrie (max, blue), just all sorts of little and not so little things, but nothing massive bigger than that castle.
Oddly one thing that stuck with me has been an interest in Robotech and also the (by lazy toy crossover) Transformers. I re-sparked the interest in that 2-3 years back and have built up an impressive selection of G1s, all but 1 of them are complete with the parts, and I have some scan cards and manuals too. I love to keep them on display and also photograph them from every transformation as it helps remind me how to do it, and lessen the need to transform them often which is playing with fire given the age.
https://flic.kr/s/aHsmbXVHGgNow I remember having some fun with like Robotech vs Voltron or the Star Wars stuff. Centurions with their zip lines built in along with GI Joe would be terror from above. I guess the old Nintendo wrecked me a bit, once that came to me at the end of 1985 most my focus ended up there with my stuff and with the friends in the neighborhood. I've still got a couple of the old trophies from the 80s along with a few other odds and ends like the SMB3 happy meal set. It was fun mixing the series up into little play times or battles.