I have some basic ideas that I have implemented in multiple languages. I think of them as "Rosetta Stone" projects:

- Bowling score - More of an exercise than a project.

- Sudoku solver - Also an exercise, but could be more with a UI.

- "Setting Sun" tile puzzle with UI. Saw one of these at a Cracker Barrel restaurant (https://www.siammandalay.com/products/setting-sun)

- Wordle with UI - I've only done one in Rust/WASM, but might do one in Dart/Flutter.