Sorry for my poor artwork – we learn by doing, and all that. Mind you, I have done (or attempted) some fancy shading on the box to imply depth.

I had the idea for this last year, and I’m quite surprised that nobody has beaten me to it (or at least I couldn’t find any prior art through a Google search). It was too late for cards last year, so I put it to one side; my plan was to draw it this year, then maybe make some custom cards at a printing shop. However, I didn’t get round to that in time, so I figured that I ought to at least do something rather than putting it off for another year.