I remember the lava the most. In the department store the black tiles were safe rocks and the white tiles were the lava...
I always imagined how epic it would be to have a remote controlled car that could keep up with our moving vehicle, jumping over crossroads and all that.
I would relax my eyes and let my vision glide using the the lines of the road. Made it seem like TRON.
Another classic from my youth was to wrap kite string around my basement and see who could make it across the room without touching it.