You can make a flow chart in Google Docs in a couple of ways. Here's what you can do with the native Google Drawing and third-party options.

An icon in the shape of a lightning bolt. ... Matt Leichter published the flow chart on his Law School Tuition Bubble blog, and he and Browning have given us permission to republish it here.

Lovely Charts is a free web-based tool for creating flow charts, site maps, network diagrams, and other visualizations with a drag-and-drop interface ...