I became a highly skilled daydreamer. I would sit there and zone out most of the time. I'd pretend to be paying attention once in a while to keep my mother off my back. Some of my fantasies weren't exactly pure or JW-approved as I got into my mid to late teens but they helped me deal with the excruciating boredom of those meetings. Unfortunately, I couldn't employ my excellent daydreaming skills while out peddling propaganda.
Yeah, those pictures were something else. Fortunately, I was probably old enough to not be traumatized by them - my mother dragged us into that cult when I was about 10. After I became free, married and had kids, my 5 year old daughter was really freaked out by those pictures when my JW mother sneakily started proselytizing to my kids, against our wishes. I suppose if you grow up with that fear mongering crap all around you, as part of normal discourse, it's not as horrifying as it is to a kid from a normal family who's suddenly presented with it.