More uses for the carabiner
I have another use for those caribiners...I keep one in my bag for two things:
1) When my kid sheds an article of clothing, I can clip it to my bag or a belt loop so I don't lose it (and don't have to carry it).
2) When serial shopping - like at a mall, I can hang all or many of the accumulated shopping bags off of my shoulder bag. Keeps the hands free for more shopping or toddler-herding.
Another great idea pulled from Caitlin's incredible Babies on a Plane hack: use a carabiner to attach a water bottle to your bag. Here's one made especially for the job.