Multifamily, self storage and mobile home parks are some of the more interesting you might want to explore while you sort through your strategy.  

I took everything of theirs and put it in storage (I paid their first month) and then I changed the locks.

Long term, I want to scale out into other real estate areas such as multi-family and self storage. 

It is an eyesore for everyone If you owned a single family home you cannot park it on the street The common areas are for everyone She should pay for storage off site or sell the car @Russell Gronsky

I feel that I'm becoming more & more book smart and am ready to start "cutting my teeth" in REI.My short-term (3-5 yrs) areas of interest are Fix 'n Flip and BRRRR while longer-term (5+ yrs) interests lie in commercial investing (syndication, apartment, and storage).

Is there an inspection in Tulsa, Oklahoma willing to come out just to crawl under the home, and take your moisture Device and help me identify other areas where there may be mold growing?

I really want to get in to passive income such as car washes, self storage units and multi-family properties as well.

The other question is how old is the device?  

Depending on how much material you have, you could always rent a pod or something similar for worksite storage.

If you want to be assuage your conscience - offer to pickup part of their storage costs.