I've been thinking for a couple of week now about learning Rust, but something that's been bugging me has been what to build with it. Rather than focusing on what to build first, I should really be focusing on learning Rust first.

This sketchbook of implemented ideas isn’t a paper book, but a collection of small programs. It could be as simple as a folder full of Python scripts or Erlang modules. It’s not about being right or wrong; many ideas won’t work out, and you’ll learn from them. It’s about exploring your interests on a smaller scale. It’s about playing with code. It’s about having fun. And you might just become an expert in the process.

— A Developer's Sketchbook for the Twenty-First Century by James Hague