Children's Car Seats
This came across another list I'm on. http://www.youtube.com/watch?v=azgBhZfcqaQ
(warning - tear alert).
Marguerite is still in a 5 point harness, and her current car seat should be good for a while. I'm not sure what the set up is for the seat when she gets above 40 lbs (the seat is supposed to be good until 100 lbs as it converts to a booster).
Add this to the list of things to keep in mind.