vector silhouette
http://tpexweb.info/blog/category/vector_illustrations/
kewl pictogram
http://thenounproject.com/
silouette design
http://kage-design.com/wp/
flowers (vector design)
http://dezignus.com/vectorflowers/
seasonal trees (vector data)
http://sore.hontonano.jp/objectandelement/571-beautiful-seasonal-trees-free-vector.html
