I used to make little stupid societies or villages -- basically world craft with all sorts of figures. It wasnt just action figures, I would also play with girl toys, baby toys -- whatever model or character that could fit in my narrative. I had so much damn fun doing that, even better at someone elses how or new location.
To answer the question, no, all in the trash. Why trash? Dunno, i wanna say void because that makes more sense. The toys...just vanish as far as memory goes.
Would I keep toys or stupid figures? Nah, not because I see myself as "Dr Professor Super Mature Adult person" but because I just dont value material objects without heavy sentimental value in then anymore. I have Sonic plushies, kirby one too and tons of book of stories i really like, and handheld consoles on display. That is about it.