Thinking of changing my morning routine because of children's bad behaviours.

[mom-in-alberta]

I was going to suggest that if you want to do breakfast at your place, have the parents provide it. (Send out a list of acceptable vs non-acceptable foods) I am sure the family that has to get up early to eat, would appreciate it.
If you are set on providing items like french toast, eggs and pancakes; I would suggest pre-cooking as much as possible. French toast and pancakes can both be reheated in the toaster. Otherwise, between breakfast, snack, lunch and snack, you are going to feel like you spend most of your day in the kitchen! Also, you may find that if you are providing this type of breakfast, your need for a morning snack will diminish, maybe even disappear. Most of these parents have likely been serving a quick and portable breakfast, like bars or cold cereal. You may find that all you need to do for snack is a piece of fruit and a drink.