Funny, when I saw the larger picture, without even looking at your location, I immediately thought, must be a GI over in the sand box somewhere. I myself have lived under similar conditions for long periods of time in Saudi and Turkey. Although, it's a great improvisation, I'll bet when you get back to a real shave cave with hard walls, you'll feel like a king. God Bless and stay safe out there.
thanks for the well wishes...the improv is part of the nature of the beast as you well know...and you are correct in that I am indeed looking forward to getting my shave cave set up