Card Polyhedra

Playing cards seem to be the default merch for math-student-seeking companies. This always seemed a little strange to me given that they are the stereotypical incarnation of probability, and numerous maths students seem (unfortunately) opposed to any form of statistics. Despite this, these cheap pieces of card (which might explain their prevalence) have accumulated in my bedroom, having been given to me from FinTech companies every open day and employment fair.

With no use for 7 decks, I thought that I could use a few to make some nice shapes. Luckily, I was not the first to think of this. ...