Cookie sower is a small but handy cookie clicker plugin that lets you fill your entire garden with a certain seed by clicking a single button.
Copy the following code into the destination of a bookmark. If you click the resulting bookmark while you're on http://orteil.dashnet.org/cookieclicker/ it will load the plugin.
javascript: (function(){Game.LoadMod('https://awittyusername.github.io/files/cookie-sower.js');}());