Based on spot-it, I created a web-based family spot-it game and also code to generate physical cards for my family for the holidays a few years ago. Thanks to stackexchange for the incredible math magic. The web-based game is interactive and mostly done with css animations. I used a bunch of PIL python code to generate physical cards which look better than the web-cards look, with custom image sizing algorithms that try to recreate some of the beauty of actual spot-it cards with different sized images of different shapes being distributed in pleasing ways.