Made this forest with MSPaint (well, technically MSPaintbrush, the older version, but there's nothing here that couldn't be done in the current one--oh wait, not true, the older model has a little more variety in brush sizes on the toolbar):
Posted it to dump.fm and Crunkus did several animations using it as a setting:
with traversing jello llama posted by AGT528
handheld llama tracking closeup