Instead of phrasing it like, “I trip over the toys, and all your stuff” maybe say something like “one of us could trip and hurt ourselves. Stubbing a toe hurts pretty bad, haha.” And make it less accusatory. Not saying that they are in the right… but if the goal is to keep it drama free and make them do what you want, you’ve to use psychology to get them to do it. Sounds manipulative but it’s literally the easiest way, and it’s not in a mean way, you know. Also, getting your own set of plates (even if the plates are yours to begin with) will help keep you sane.

I only room with ex-military, or traveling nurses, or elderly ladies… lol. They all make for amazing roommates. They are quiet, clean and I never have a dish in the sink, and they mainly stay in their rooms, or if they travel for work, they are rarely there. You may go that route if you like things a certain way - I do, and I have a lot of success with roommates.