I recently worked on bringing Artsy to Amazon Echo, Alexa and decided to hack something less serious.
Two Echo dots are better than one. They are aware of each-other, so only one will pickup a command when in proximity with the other and on the same WiFi network. Alexa can also say its name, so we can make these talk! Alexa, ask mom to buy me an elephant! (video).
Source code in github/dblock/alexa-mom.
I also made another skill called The Future of Amerika, now available in your official skills, that quotes Donald Trump making America great again (video).
Source code in github/dblock/amerika.