It is not your responsibility to house this person's items indefinitely in your rental. 

I’ve been offering a $100 referral fee for existing tenants who refer a new tenant to any of my properties.

But, there are certainly several items that would give me pause.  

The other business I run is reselling, listing items on eBay & FB.

What were the biggest line items?

There are a lot of options out there.Some of the most useful items BiggerPockets members have identified are features that save time so they can spend time working on their next property.

For the truly ambitious, the right site could then be further developed (outsourced) as a "green cemetery," which I refer to as "selling $500 post holes" at a few thousand per acre.

It’s an item in our roadmap, but maybe I just need to prioritize it to the top of the list in 1H 2024.Bottom line is that I allowed us to stop supporting it several years ago, in a decision I wish I could have back. honestly, I used to use the app personally as well.

The other contractors that I have worked with gave me a full scope with detailed line items of what will be fixed, how much the labor is and how much the material is going to be.

Here is the podcast episode that I am referring to when asking this question.