I'd rather not spend time trying to compile lists as they'll only get out of date. If you or someone else has particular skills/interests just post here and I can try and suggest things in a bit more detail though...
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Hi! It'd be great if Hacktoberfest led to some more contributions - I'm all for it.
However there are already public lists of issues in the GitHub repositories:
I'd rather not spend time trying to compile lists as they'll only get out of date. If you or someone else has particular skills/interests just post here and I can try and suggest things in a bit more detail though...