Doodles done on San Antonio trip

I love that I discovered zentangle type of doodling.  It is a real time killer when riding in a car when we are going on a trip.  Here are some of what I did on our most recent trip to San Antonio.  I had quite a few so decided to consolidate them on a couple of pages rather than show them individually. I also did some in color and will post them tomorrow.

I still haven't decide what to do with all these doodles.  They print out beautifully on glossy photo paper.  I thought of making cards.  I would appreciate any ideas of how to use these designs.