How do your kids climb up into their car seats?

I’m curious how your parents help your kids climb up into their car seats by themselves? Both of my kids aren’t able to very efficiently climb into their car seat, my son is (given enough time) able to get in the car with his Stepstool and a good workout, I have to however,l lift my daughter up into her car seat because she isn’t tall enough to get up on the floorboardclimb.

I’m curious as to how you help your children climb up , A. Onto the floorboard of the car(for my daughter), and B. From the floorboard into the car seat?(for both of my kids)