Being a red head and having been badly burnt a a few times I feel your pain. I have tried a number of the suggestions below but not all of them. Some of them I am not sure I would want to try but... I have done the aloe vera and the aspirin/tylenol/advil. They have worked ok but I don't like the slimy/stickyness of the aloe gels. I happened to see on my bottle of Mentholatum that it helps with sunburn. I decided one day to try it on the back of my hand that I had burnt when I kept score outside all day at the track meet. It worked wonderful and I have used it many times since. It is slimy and greasy but works wonderfully. With the menthol in it, it cools you quickly as well as moisturizes. It does not take the redness away but will take the heat and pain away. I would try it on your son if he is having problems, it works great for the face because it is much easier not to get it on anything. (Keep it out of his eyes, it painful. Also, keep it out of the mouth, it tastes AWFUL!) When the blister on your daughter's ear finally pops make sure you keep it covered, they can become infected easily.
My one warning is that you don't sit/wear or sleep on anything that you don't mind having grease spots on. It doesn't come out well in the washer and is set for life if it makes it to the dryer.
Hope everyone get to feeling better and that you find a few tips that work well for you.