Derk-Jan (DJ) is a prolific contributor to our front-end stack -- a veritable Tzadik Nistar[0] who goes around quietly fixing and improving things. You may have met him at the architecture summit. He is currently working on improvements to the CodeEditor extension, which provides an alternative text editor for editing source code (like Lua modules, for example), and has requested some help in creating icons for the toolbar. See his post to wikitech-l for details:
I'm writing to endorse his request and to encourage designers with a cycle or two to spare to help out! :)