I got myself a nice laser engraved 24-simplex for my round table. By chance, I also just bought a book with a very similar image on the front cover. The book is about the work of Albert Ernst Bosman (1891-1961). Het was a friend of Escher, lived just across the street from him. Like Escher, he made lots of mathematically interesting drawings. But unlike Escher, he did not sell them. Instead, many of his drawings were slowly decaying in his old home. Until his grandson Fernand Bosman decided to get the drawings restored and published. The result is a very interesting book. I will do some posts inspired by the book.
I got the book on "Ars et Mathesis" day in Amsterdam last month. It turns out I knew Fernand Bosman from Delft university, we had a couple of adventures together...