Magic tablets
It is also known as Jacob's ladder or Chinese tablets.
but instead of wood (which has to be cut and sanded) I use PLA since I have the... 3D printer.
The design is parametric in Freecad so that the dimensions can be varied at will depending on the width of the tapes to be used. So the width of the slat must be at least 3 times the width of the tape.
3d model print parameters
Print 6 pieces in rigid filament.
It is convenient to put a good amount of filler so that the piece has the appropriate weight to make its magical mo...vement. For example 60% or more.
You will also need 15 tapes of 3 times the length of the splint