How can I use a tent trailer's porta potty and still have privacy?

Many years ago, my dad put up an old fashioned ice fishing shanty for a porta-pot shelter behind our garage during a major remodeling. It was basically a wood framework forming a 4 ' W x 4' D x 8' high box. The walls were hinged together. Each wall was covered with canvas stapled to the frame. The roof was a corrugated acrylic panel that overhung the door and let in daylight. We added a hook for a battery powered lantern. The TP holder was hung from a rope from the top wood frame. We had patio blocks for a floor, but you'd probably want something much lighter. (Indoor /outdoor carpet section can be hosed clean and easily packed). The door had screening at the top and very bottom with canvas in the middle for privacy. A hand wash station was just outside the door on a small table. (Old enameled pitcher and basin with Soap on a Rope was useful). For the hand towel, add a grommet to one corner or use a golf towel. Insert a shower curtain hook thru the grommet and loop through towel bar. You won't find the towel in the dirt every time the wind blows. You could probably build the frame out of PVC instead of wood and use the reusable compression connectors (Sharks, they work with PVC and cooper pipes, check your plumbing department. They require a special "key" to unlock the fittings). This would be lighter and break down small enough to be packable.

Fabric treated with Scotch guard is likely more affordable and lighter than canvas. It can be tied to the frame instead of stapled. Make a mud flap that gets snapped or Velcro'd to the bottom of each wall panel. Make several for future use as that section will take a beating from ground dirt and will wear out faster than the rest of the walls. They can be removed and washed as needed. Store the fabric in a Rubbermaid type bin when cleaned and dry and not in use. Never store wet/dirty fabric as it will rot.

Great ideas in your reply. I like the idea of lightweight hinged walls (maybe from old tent canvas) that collapse for traveling, the carpet for flooring and a hand wash station. Thank you Susan!

Back in my tent camping days we made a shower enclosure with a hula hoop and some lightweight chain that was thrown over a tree branch and held in place with a small padlock. Bought a couple cheap dark colored plastic shower curtain rings attached to the hula hoop. The same principle could be applied here with modifications.

I once saw an enclosure using a shower curtain as suggested by Naomie only it was hung from an umbrella frame with the umbrella fabric removed. If the umbrella has a hooked handle, one can hang from a nearby tree. TP can be slipped onto a Dollar Store Shepard's hook pushed into the ground to have in the enclosure.

been there done that. look for a shower tent or fold a privy. cabela has a selection, amazon does as well.