I’ve been investigating and enjoying puzzles, illusions and the like for many years. My good mate Mick Guy is of a similar mind and he keeps sending me his latest ideas.
I’ve started to produce diagrams for several of mine, maybe working towards a self-published book at some point. Here’s an “invisible star” using 3 squares of black & white paper. I have variations to produce squares and a few other shapes.
I find these designs are as interesting conceptually as they are origamically (is there such a word?) but as always, I strive for an elegant folding sequence that is properly locked together.