One of the many things that my current job is impressing upon me is that even mundane things need to be properly documented, so that it can be done by others if you’re not available.
With that in mind I’ve set myself a couple of tasks: 1. to add versions to all of my code blocks, and record a changelog somewhere, and 2. To setup and use a system to document what I’ve done, how it’s accessed and used, backed up, etc.