So, I have a huge blank canvas, like 40" by 30" or somewhere around there.  The guest room in my house could use a little art and it would fit well in there.  The room is sort of purple themed.

The problem is, I can't really paint or draw.  I know there has to be some simple design or creative solution I could use to turn it into something worth displaying.  Any ideas?

ETA:  Thanks, guys!  You are a really creative group!