Baking
I enjoy baking, most of which is non-mathematical. However, here are a few photos of mathematical baked goods I’ve made over the years.
A Ramsey-theoretic cake I made for my area exam as a PhD student
The Cookieya Conjecture, which won me the “most mathematical” prize at the 2023 Math Bake Fäscht at ETH. See here for an explanation.