Just wanted to make a quick post on Kaleidopaint, available on the App Store.
This an an app for making drawings similar to the style of M.C. Escher. You can choose from a bunch of different symmetry patterns, and then finger paint your way to some great images.
Being so simple to use is what really makes it a great tool. It’s possible to undo/redo, change colors, and also just do crazy things until you find something you like. I’ve even combined this with an intro to laser engraving as a way to get going quickly while encouraging my students to make something of their own instead of going straight to Google Images.
Almost best of all, it’s free. Give it a try and let us know what you think!