Train track making obsession

Violet's toy of choice lately is the wooden train tracks.  We bought a wooden train set from our dog trainer, Karen.  Since we bought a few additional switch tracks and a mountain piece (and some male/female adapter pieces), she has discovered how fun it is to make new train tracks.  She will barely play with one before ripping it apart and making a new one.  I am constantly amazed how she creates the most interesting and creative tracks.  She creates quite a few each day.  I think she plays with it more than Calvin does!

A sample of her work: