Stupid SLF
Leaving aside for the moment first aid kits, if passengers actually listened to the safety briefing and ensured that they kept their seat belts fastened except when moving about the cabin then the chances of injury due to unforeseen turbulence would be drastically reduced.
We have all heard the "mass clicking" of seat belts the moment the "fasten seat belts" sign is turned off and frankly these people bring it upon themselves. It also beggars belief why so many passengers find it necessary to move around the cabin on a short haul flight. Your average bladder ought to be able to hold onto it's contents for 3 or 4 hours, and anyway, aircraft toilets aren't exactly great places to use.
Don't airports have toilets these days?