How much will my stuff shift when pulling a TT?

I use various storage containers, tubs, bags, etc to put most stuff in. I leave very few items just loose. When possible I pack things tightly. I did learn that even items left down inside the sink can go flying if I brake sharply. Coffee maker goes in the bottom of the kitchen cabinet laying on its side with a few other items around it.

Always, always, always open doors slowly or you will learn to always, always, always open doors slowly.