Free or Nearly Free Stuff 3D design tools http://ww2.kqed.org/mindshift/2013/07/23/time-to-start-making-free-design-programs-for-3d-printers/ Animation http://www.instructables.com/id/How-to-make-a-Lego-stop-motion-construction-movie/ App inventing http://appinventor.mit.edu and http://www.appinventor.org Apps http://gettingsmart.com/2014/02/theres-maker-fair-pad-10-ways-create-student-makers-apps/ Augmented Reality: Guiness Book of Records 2014 http://www.guinnessworldrecords.com/seeit3d/ Aurasma and Apositive - augmented reality apps https://prezi.com/wd4iz9dhiuak/aurasma-for-the-classroom/ and https://itunes.apple.com/au/app/apositive/id726061315?mt=8 Balloon powered cars http://www.instructables.com/id/Balloon-Powered-Car/ and http://www.stevespanglerscience.com/lab/experiments/balloon-powered-race-car/ and http://makeitatyourlibrary.org/play/make-your-own-4-wheel-balloon-car#.VholHPmqpBc BallStrike augmented reality app from the Windows store https://www.microsoft.com/en-us/store/apps/ballstrike/9wzdncrdcr6q Binary card puzzles and…