About Prism: Glad you like it! It started from dabblet.com, the HTML & CSS playground I built in 2012. It was an evolution of a crude script I had written to highlight code on my presentations (you can find its origins in the CSSS repo: github.com/LeaVerou/csss/blob/gh-pages/plugins/co… — CSSS is my presentation framework). Eventually I realized it might be a good idea to clean it up and release it as a separate script, and it became way more successful than any of the scripts it originated from.
About my favourite pastime (I assume you mean besides making stuff): I really love food. I like trying new things at restaurants, the more adventurous the better (my Instagram feed is literally over 90% food pictures and ratings) and I really enjoy cooking together with my partner, although we are not particularly experienced cooks yet. We're both really into food though, so we're getting better at it :)