For passing ideas, I just stick them into an email and send them to myself. For other stuff, I keep a private github repo called 'braindump' with each idea in a

For passing ideas, I just stick them into an email and send them to myself. For other stuff, I keep a private github repo called 'braindump' with each idea in a separate project directory. Whenever a project gets legs and I want to share it, it's pretty easy to then move it into a separate repo and grant access to specific people.