How does everyone organize and store their tools? I'm not asking what tools you think everyone should have (though what you have will impact how you store it); I'm interested in organizational systems.

In particular, do you have a system for making sure you can easily carry tools with you while you ride and not have duplicates everywhere/not lose them? How do you store things in a small space? Etc.

Also, I'm a newb here, so please let me know if this has already been covered (I did search before posting and didn't find much).