Hm. The only things I can really think of is (as one example) playing Beast Wars with my younger sister. And I mean that as we were actually being the characters. We'd play either inside the house or outside, impersonate voices, and run around on all fours in beast modes, and "spar" if we were a Pred and a Maxi duking it out.

The whole running around on our hands and feet is something I think my two sisters and I can still do today. We did it all the time; it was fun!
Anywho, when I'd play Legos with my brother and younger sister, I'd incorporate the voices I could do best at that time. We had the police station where "Don" (named after a family friend because the Lego guy looked just like him) was the sheriff and I used Primal's voice for him (before I knew Garry played a lot of cop roles). We had a Scott too who, of course, drove the police motorcycle, wore all black with a black helmet and visor, and I used Rattrap's voice for him. My younger sis used Dinobot's voice for someone, but I think that was for one of those Insectnoid sets or whatever they were called. I'm not sure anymore, but either my brother or I might have used Megatron's voice for the main M-tron bad guy. I think it was called M-tron... Heh.
Last but not least, when I'd right letters to my friends in high school (I know, it's such a girl thing), my nickname was Rattrap. But that's about it. Nothing to a greater extent than that. LoL Ah, how I miss those days.