We store all of our dishes (plates, bowls, cups, and a few other odds-and-ends) in the cabinet above our kitchen sink. The cabinet came with one shelf, so we ended up stacking things pretty high (e.g. all our plates were stacked in one column).

Unfortunately when we drove, this often caused our plates to slide and tip over, making a mess. About a year and a half into our journey we called Tiffin to see if they could send us an extra shelf for the cabinet. A week later it arrived and we are now able to organize things much more to our liking! Best of all, we have no more tip-overs of our dishes while driving.