I have a really little one (great for finishing nails but slow for framing), and my dad has a big one, but dad's is not portable like mine.

She had a portable fence and cage for it initially. 

She finally got an appointment for Nov 16th 2021, so I told her let's leave for next year than because we would be leaving the country Oct 30th for the next 4 to 5 months and I don't want anyone in the apartment while we are not there ( Due to her taking few things from my fridge last year without my permission A champne gift my wife got it and running a portable small heater in the bathroom while we were out the light bill came to about $150 every month we were out last year yes that's correct She was leaving a portable small space heater running without anyone in the house.

In fact a new appraisal is required since the appraisals are not portable and are done contracted by the lender.

What about portable toilets?

A year ago the tenant installed a portable washing machine in an upstairs unit.

From my understanding, as Delaware is a physical location state (by the Real Estate License Portability Agreement - (https://fitsmallbusiness.com/real-estate-license-reciprocity/), I am able to conduct business and receive commission as long as the deal is remotely conducted from my licensed states.

I didn't realize that the Appraisal Fee is portable for FHA.

I'm looking for ideas or insight to see if there is a secondary market typically for portable units like this?

It is so portable you could take it on trips and set it up at every hotel you stay in.