Inspired by all you magnificent bastards, I’ve been gluing and painting Jenga blocks, and turning a 2’x4’ dry erase board into to 2 double sided 2’ dry erase on one side, painted for blackish and greenish background on the hardboard side. And then painted the backs of my campaign bulletin boards for a few other backgrounds (sea/sky, industrial grey, and cavernous brown/black). One thing O tried that worked out well is varying from the default grey on one side of about half the Jenga stackers, putting in some black and textured brown.
Here’s my mockup with the new toys for upcoming Death on Old Earth (formerly known as Krell).