I don't like programming hobby projects in a niche language - per se. My hobby projects involve using languages, toolchains, or concepts that I wish I were bett

I don't like programming hobby projects in a niche language - per se. My hobby projects involve using languages, toolchains, or concepts that I wish I were better at, either out of professional or personal interests. Rust, Swift, Modern CMake, Vulkan, WebGL, Hugo and Gatsby are examples of things I've used in side projects that have directly benefit my professional career.