Tiny Paper Zoo Plus for iPad and iPhone is free until 7/21/13. I love how this combines high-tech and paper. You can print and cut small animal models to make – what fun! But, even better, there’s a tracing mode where you place a paper over the highlighted patterns to trace and draw it yourself – genius! This deal is only until 7/21/13 but if you miss it, you can check out their free version, Tiny Paper Zoo.