Think
Just stuff I’m thinking about. Add yours below.
Art.
Small injector.
hobby molding http://www.atomicshrimp.com/st/content/plastic_moulding/
Paper plane design.
https://www.youtube.com/watch?v=FTQ2W-cb-C8
The sonar demo code can be found here:
https://www.marginallyclever.com/blog/
http://www.learn-c.com/experiment5.htm
https://cambridge.nuvustudio.com/discover
https://www.youtube.com/watch?v=ahXIMUkSXX0
http://hackaday.com/2014/06/25/diy-hydroponic-system-grows-herbs-on-the-wall/
http://www.howround.com/