Tessellating lizard pavers
You can make these interlocking reptile gecko pavers yourself, by pouring concrete into a mold sold by GeckoStone in Hawaii. Any resemblance to the work of a certain mathematically-inclined Dutch graphic artist is purely coincidental. Besides looking fly, GeckoStones “naturally create their own borders, and thus won’t wander off into your garden.” Some other cool tessellating patterns are available on the site.
Props to Steve for submitting this.