Paper-Based Fitness Tracker Made from Household Materials

The watch is made up of common materials, with temperature and humidity sensors made from silver ink and Post-It Notes, and pressure sensors made from aluminum foil, double-sided tape, and microfiber cleanroom wipes.  Learn how to prepare it.

http://www.3ders.org/articles/20170114-paper-watch-combines-3d-printing-and-household-materials-in-cheap-alternative-to-apple-watch.html