A key, an instrument used to operate a lock, is typically a small piece of metal consisting of two parts: the blade and the bow. Usually a key operates one specific lock or a small number of locks that are keyed alike, so each lock requires a unique key.
Negative space Map Art- create a drawing and then paint over everything else so just the map inside the drawing shows. I like the idea of actually painting directly over the map instead of just cutting the map out. Does not link to original website.