How have you brain dumped before leaving a job in the hopes of helping your old team?

One thing that I was most worried about when leaving my job in consulting was whether or not my team was going to suffer in my absence. I was leaving behind files in many forms and locations, notes in multiple tools (some local to my computer), and to their dismay, I was taking my brain! To make sure I was leaving something impactful and useful behind, I created flowcharts in Visio of every project I had worked on in the past 12 months, the status of tasks, dependencies, and next steps. I pretty much wanted to tell a story of what has happened, was happening, and what should happen next. A couple weeks ago someone from the team called me and thanked me for leaving those charts behind. Question - has anyone done something similar? Is there a tool that you've used to accomplish this?