2.Does these work with Kindle and Chromebooks?
It works well with Kindle.it works perfectly
3.Do they work with computers? Bought a different pair that did not work with computers for school.
To my knowledge yes! They work with iPads and our HP computer.
4.Do they work for airplanes?
As far as working, yes, but size-wise might be an issue-they are full-sized.
5.Do these headphones work with a PC?
Yes it works for pc, as long the device have a 3.5mm input.
6.Are these suitable for 2-year olds?
My daughter is almost 2 and they are a little big but she can still wear love.