You could also buy a portable dishwasher that attaches to the sink faucet.

Some people can make due with a $50 portable toaster oven for toast, chicken, etc.

They have portable blacklights that will illuminate urine. 

Do you think tiny homes being portable hedge my risk?

Bos Containers USA – these are portable steel storage containers with interlocking assembly (requires assembly but should be easier to ship and less expensive), or...Miller Building SystemsPlease note that you can also look on ebay, classifieds, etc.

Buy a portable LED worklight (or better yet, two of them; Lowe's, Home Depot, etc. have them). 

I have had a few ideas of dropping portable storage solutions on there and making a mini storage facility, beekeeping and selling off parking spaces but I’m wondering what other people have done in these situations.

You may want to consider portable units (e.g. shipping containers) for Self Storage for a few reasons or as you mentioned RV, camper, or boat Storage but WITHOUT any building (no garages, 3-sided stalls, etc.) just dirt & a fence for security and get some immediate cash flow coming in.Yes, you're going to need to do some "back of the napkin calculations" to determine your costs and potential revenue for whatever specific route you go, but you're also going to want to do a market study & check out the competition to put into context as you can't evaluate in a vacuum.For instance (and this is a basic example just for expediting my point) if you want to build an RV/Boat Storage and when you look around the only other two in town are hardly used, then not so good. 

Easy portability and hookup for my homes.

Its also reasonably portable which is great for my lifestyle.