We supply white towels and white wash cloths (white so they know we are not hiding stains).

Groceries, gas, clothing.

Where would they put their clothes if they are staying for an extended period of time? 

I was trying to use my parents washer and there was no way to fill it up more if you wanted to give your clothes more space or let them soak, it had a sensor that decided how much water you can use.

  ( which is me since I left my bagging groceries job at 18 when i got my RE license.)So for me there was only one reason to be in real estate and that was to afford shelter cloths and food and have a decent home to raise my children.the by product of this was being truly self employed at such an early age and realizing that I needed to handle my own health insurance and save for tax's and many other things that being a W 2 folks dont think of.. you know vacations cost us big time in RE sales in lost revenue and then the cost of the vacation.However for me I grew to like it a lot..

Another crib, diapers, clothes, etc.  

Henry David Thoreau has a very prescient quote when it comes to the Guru and Pay-to-Play System in RE: "I say, beware of all enterprise that require new clothes, and not rather a new wearer of clothes."

@Maurice Burnett I have got around this problem by supplying my tenants with heavy duty, commercial grade clothing racks with wheels.

Large 3 family property where every room from the floor to the ceiling was filled with EVERYTHING from clothes, to toys, to food, to (in a couple of spots) human feces and urine.

Just this month, I chose not to take the 5% discount on a clothes dryer because putting it on a regular card upped the manufacturer's warranty by two years and gave a percent back.