This is the whiteboard in my office kitchen:

It started as the set of instructions in red in the upper right from our product owner and business analyst (who somehow also got stuck with the job of ordering our office coffee supplies).
Our IT director translated it into a flowchart, with additional contributions from several developers:
I contributed the JavaScript function on the left (and also, somewhat more embarrassingly, the chicken pot pie comment above):
Every time I look at the whiteboard I feel happy.