I remember posting about the big/small thing in another thread, but will add it here in case a neurologist does someday wander in and do a quick count of experiencers as compared to total membership; after which he/she may decide it's interesting enough to research.
I saw a screen, similar to a tv screen, except at the time I hadn't seen a tv. The screen was filled to absolute capacity with motor-bikes, all tearing around noisily. There was a man on each bike. It was all black and white. No colour. The sound was deafening; no let up at all. Some of the bikes were upside down. They tore in every direction and completely filled the screen; you couldn't have put a match between them: like orchestrated bedlam. Then in an instant this mess of movement and noise was replaced by silence so total, it virtually hummed. And from right of screen rolled a small ball. It seemed to be aware. As it rolled silently towards the centre of the screen, it grew progressively larger until it was huge and filled my sight. It continued, growing smaller as it rolled to the left. Then back to the screaming, roaring motor-bikes. Then utter silence as the ball commenced it's weird, silent roll. The ball was unnerving.
Another time, my parents were arguing heatedly in, of all places, a caravan. Frightened, I was scrunched up against a window, watching them, hoping it would stop. At some point, their heads became immense. Then their mouths became immense and out of proportion to their large heads. I could no longer hear them shouting; it was exactly as if the sound had been turned off. I watched in terror as my mother's mouth, then my father's, opened and closed in silence as they yelled at each other. They were still shouting at each other, but it was as if they were doing so in silent, slow-motion. It was hideous, seeing their mouths magnified; seeing the huge teeth as their mouths opened and closed angrily.
Then my father turned towards me. He was speaking directly to me with his enormous mouth in his enormous head, but I could not hear him. Then my mother turned her attention to me also. Possibly I looked terrified and upset. And possibly they now were attempting to reassure me, because they were laughing, as if their argument had all been a game. But I did not hear the sound of normal laughter. Instead, it was as if the sound had been chopped up. So what I heard was a snatch of distorted voices, then silence, then another burst of noise, then silence and so on. They continued moving towards me, to the point they seemed like two huge, distorted faces with large open mouths, looming above me and accompanied by bursts of rat-a-tat-tat laughter interspersed with silence. They resembled horrifying, open-mouthed heads similar to the ones at fair-grounds; the ones you try to toss a ping-pong ball into. I don't think I ever regarded them in quite the same way after that episode.