Everybody knows you can customize toolbars in Mac Apps but many probably don’t know you can customize the Finder’s toolbars. Beyond customizing it with the items Apple provides, you can drag an application into a Finder Window’s Toolbar to make launching or dragging a file to an app even easier than going to your dock.
Here’s an example:
See the Paperless icon in the toolbar? Dragging and dropping a file on Paperless never was easier..
And if you’re a true Mariner Die-hard: