After the Harmonograph (which got in the meantime greatly extended), I got another tool for you to create art with - the Cellgraph:

Welcome to my musings: how editing should be (aimed to all users of an editor as food for thought). After select all I will today choose as feature of the day: goto edit (Strg+E) by which I mean jump to the location where you did the last change to the document. In latest version 0.404 I even extended the feature to make it more productive.