rich_

Want a toolbar that stays out of the way? Hover to the corner of the page to get your admin links. 
This plugin was made to enable users to get access to the admin area quickly without the default wordpress 
toolbar. The four corners of the page are configurable via drag and drop settings page.
Please let me know if you have any issues with the plugin or you would like to see additions.

Hot Corners

Replace the WordPress toolbar with configurable hot corners.

Michael Dance

This humble plugin adds an option in Settings > General that controls who sees the WP Toolbar when viewing your site.
You can turn the Toolbar on or off per user role.
Note that this controls the public, front-end version of your site. When viewing the dashboard, the toolbar always appears.
How is this different from other plugins that do similar things? It’s smaller, cleaner, and doesn’t add any unnecesary settings pages. It’s also smart enough to hide the Toolbar option on user profiles if that user is already restricted from seeing the toolbar.

Disable Toolbar

Control who sees the WP Toolbar when viewing your site.

Hot Corners vs Disable Toolbar