We also add a gift certificate to the restaurant [which the owner gives me a big discount on] and a plate of home made cookies.Next to the basket, I have a decorated box that has some of my Avon products, toilet paper,paper towels, one towel, one washcloth, one bar of soap, several toothbrushes and toothpaste, a small pack of tylenol, stuff like that.All 3 families have been ecstatic over what was waiting for them.

And as sure as the sun rises in the east and set's in the west, wage inflation INCREASES market economy prices, that includes rents and median pricing of real estate just as much as tooth paste and pickles. 

Medicine cabinets are for a lot more than medicine, you can put bottles of after shave, perfume, deodorant, toothpaste, and a multitude of other products in them. 

We routinely clean most of our traps once a year to clear them of toothpaste, soap, hair and gunk.  

And they told us we wouldn't see another crisis in our lifetimes.But that toothpaste tube can only be squeezed so hard. 

Who keeps leaving toothpaste all over the bathroom counter?

I have done this many years ago, and there were problems; like some things were missing from my room, someone eat my cheese, toilet seat was left up, who used my tooth paste ----- they are playing their radio too late, strangers entering the building.Sure you can increase your income - but not worth the problems - you just maybe want to get better at making offers on properties you can control at wholesale prices.

I would wait for 2-3 months before making the purchase so you can use the renters money to pay for the entire shipment and analyze their spending trends and see what items they enjoy the most and best prices that would out compete those places. convenience things like toilet paper, tooth paste, tooth brushes, laundry detergent, soap, bounce could be an option, and then you have snacks, cold drinks, phone chargers, etc.

First--do you supply all of their items like shampoo/conditioner, toothpaste, laundry detergent, etc.?  

He buys things like toilet paper and toothpaste in bulk, one year supply at a time