I do not carry extra gear for others. When all is said and done, it is heavy enough to carry what you have for yourself. That is not to say that I could not improvise with what I had to assist others.

I did, however, have a "Guest BOB" at my house for some time. Now it has been converted into a kid's supplies BOB that an adult would carry for my kids. The guest stuff has made way for more baby clothes, wipes, diapers, and water now that I have a 2 month old in the house. It could be and still is a minimal "Guest BOB", but the guest needs to know that the primary reason for the bag is supplies for my children, which the guest obviously can't use anyway. My 2 year old has her own BOB with 1 Daltrex 2400 ration, .5liter of water, change of clothes, wistle, poncho, mylar blanket and a couple toys, but she still can't even carry it on her own. She is indeed quite skilled with a flashlight and can turn on basically any push-button flashlight and knows how to point and where not to (aka in the eyes). But back on topic-

Although I prefer and am better suited to bug-in, a bug-out situation could occur when you have company visiting, so my philosophy is that it is always best to have some supplies that they can take with them. Granted, I take a personal kit with me wherever I go, which supplements my EDC, but others do not carry around a BOB let alone have one...