I had one feature idea and I actually 70% implemented it on January. Due to lack of time I had to forget the implementation. Currently you can load Tomiphy boards (xml files) and good old Vexed boards. Third idea was to capture an image with built-in camera and the captured image is taken automatically as a background.

You could use this feature for example when waiting for a bus. If there is some person that you don't like you can take an image from him and start having fun. Like building a swing set from his ears. Or using a catapult to throw objects to his nose. You get the idea