Treat for Tricky Drawing Examples

This Halloween it would be a real treat if you should share some of your tricky drawing problems.  I am working on a project to improve Accudraw.  I collecting small example drawings to help test out improvements.  I'm looking for small 2d drawings that that are either:

  • Difficult to do with Accudraw
  • Easy to do with Accudraw, but would be difficult to do without Accudraw.

Here is the kind of example I am looking for:

In this case the trick is to set up a line that is at an angle (45 degrees), but measured perpendicular to another line.

As a thank you treat for you, here is a boo-tiful drawing of a ghost.  (Thanks to Dan for this great treat!)