They might need to be segregated out by problem type with some people offered solutions and some people FORCED into solutions.There are also Hobo types that want to live outdoors and beg (by choice).So maybe looking at this as several mini-problems all under one umbrella that need solving might help.Good Luck! 

-if sharing food in the fridge/kitchen is a problem, put a mini fridge in their room and tell the to keep their stuff in there.

Should they try and put a mini-refrigerator in each bedroom instead?

.- mini blinds: always metal.

I'll top it off with a tankless water heater and a mini ductless unit and sub-meter the electricity but prob not the water.

The past two decades we have seen 3 major events happen, the technology bust of early 2000's, I was laid off twice and struggling, 2008 the Great Recession and now this last mini Recession. 

In NC maybe a mini split but they are expensive. 

I always suggest updating the hardware like you mentioned, because that can help give an instant mini face-lift to a room.Regarding the appliances, when you say "black package," are you referring to black stainless steel?

The new move in had agreed to self-quarantine, we had masks, gloves, wipes, and would also be given a private mini-fridge.

I was debating between a mini split unit, heating/cooling window unit or a portable space heater.