How change Drupal Context with a button? Context is great for delivering content to the right part of my site in the right circumstances, in the right order and to the right user.

I'd like to be able to add the ability for a user to toggle Context using a link I create - a button - to cause certain blocks to appear, disappear or be be re-arranged - via Context.

I have researched and experimented for hours and can't find a solution.

In what ways I can I change Context with the press of a button?
Context Flag

This module provides integration between the Context and Flag
(3.0+ only for the moment, if there is interest in it support for 2.0
may be added later) modules.
When enabled it creates new Context conditions which can be triggered
based on the value of one or more Flags applied to nodes, currently
active users, or user profile pages.