Remember the Tricorder from Star Trek? Here is a functional device I built for a contest that makes real measurements.

The most homemade snow machine you've ever seen. Made from a hairdryer, polystyrene and MKR1000. Controllable from anywhere in the world*

Holidays came but you need to guess your gift's password! It's a great starting point if you're new to Arduino MKR1000, networking & Android

Arduino Mkr1000 + Uno + Leonardo + Java = Christmas shooting game.