My last flight home, a baby cried and cried and cried. I usually tune babies out but this one bothered my napping (don't worry - I never get annoyed at the parents - I've been there!) so I eventually dug out a tiny bottle of bubbles I keep in my purse and handed it to the dad with the kid. He was so confused ROFL! The wife told him "it's bubbles (dummy)". Finally he figured out how to blow a few bubbles and the baby quit crying.
Since ours was not a nonstop flight, we had to get on yet another plane. on this one, two sets of tiny tykes were fussing at the back of the plane. I strolled back with my magic bottle of bubbles and gently blew a few after asking the moms for permission. It helped with one, not with the other. Still, it was well worth it and the flight attendant loved it - said she would add one to her work bag
When mine were little, we did long, long flights so I had an extensive bag of tricks. Bubbles were my favorite. A couple of small bubbles blown gently works great at distracting a fussing child and stays fairly contained. While my kids are well past this stage, I haven't completely gotten out of the habit of keeping bubbles in my purse. Helped on my last trip to
Disneyland too when there were a couple of tiny kids behind me who were fed up of waiting in line
As for my own horror stories, nothing was worse than the time I took my 3 yr old DD and almost 2 yr old DS on a super long 30hr flight across the world. If they were happy, they were squealing, if they were unhappy, they were screaming. NEITHER was a good option! I will admit to resorting to candy a couple of times.