penrose tile pairs in the materials:
white detail, black detail, transparent detail, grey robust and black and white strong and flexible
One fat and one skinny Penrose-Tile.
They have holes inside the grasping knobs, so that they can be put on a thread.
If you want a set by those two in different colors:
3.588 w x
3.356 d x
1.413 w x
1.321 d x