The Oregon Trail'R side table is one of the
options offered to trailer buyers. I emailed Oregon Trail'R to inquire if they would sell me a side table. Perhaps they could add the side tables to their
Teardrop trailer parts and accessories store. I may also buy
Galley hatch support springs. I've watched many of their informative
YouTube videos. They have a CNC machine to make parts which would reduce their time and labor from what we see in the
How we build our Side Tables video.
I could (probably) make a similar side table myself. If their price is reasonably affordable I'd rather buy a ready made one from Oregon Trail'R.
Edit: Jon from Oregon Trail'R emailed me that they do not sell the side table as a stand alone product; it is only sold to trailer buyers as an optional upgrade. I'm beginning to think about how to design and build a similar side table. It seems doable. Here are some spitball ideas:

1/2" or 3/4" Baltic Birch plywood may be best for the table top and plywood supports. Making a rough guess the table top may be 14-16" wide by 36-48" long.
Jon wrote me that theirs are 40" long.
McMaster-Carr has piano hinges that could work 
For the counter top I can use stainless steel sheets or Formica. I wonder if an old stainless steel refrigerator could be recycled for the counter top material?

It'll need edge molding.

I need a source for the brackets to hang a side table to the side of a teardrop. Does anyone have a source to recommend?
Jon said it comes from Vintage Technologies http://www.teardroptrailerparts.com/Hinges___Aluminum_Trim.html 
They attach something to the hinged plywood supports so that they hold/clamp to the bottom of the table top when its folded up. Maybe
Strong neodymium magnets with countersunk and counterbore holes. would work?

To store the side table underneath my over-the-feet-cabinets I'll need some kind of a
spring latch