In the process of writing a couple different Lithium PHP plugins, i quickly came to realize a handy tool to have in my arsenal would be a quick, reusable method of markup injection (things like including jQuery on pages and some basic markup for a toolbar). So i wrote an li3_injector plugin i could use to do just that.

You can grab the plugin here for the moment, though the plan is to get it up in the lab so that installation is as simple as one command from the terminal.