Rust world really needs a GUI...would be great if you helped out making a GUI for Rust: https://www.areweguiyet.com/
There is a start of a native Rust GUI which you could contribute to: https://github.com/linebender/druid
I've got a little Rust GUI library that's pretty young, and relatively simple, so maybe fun to contribute to: https://github.com/audulus/rui :)