Inspiring solutions you’ve found that use our powers for good

Riffing off of @Dustin’s Five Design Questions, I wanted to find out more about what designs people have found inspiring, visionary, and truly world changing. 

Couple examples that I mentioned in my response:

The Q Drum — it sums up all that I love and believe in about design. It’s beautiful, simple, elegant, and provides a vital solution that improves the lives of people on a day-to-day basis. There are other products like this (the Mine Kafon is one), but if I had to pick only one, it would be the Q Drum.

Ok, so what say you? What things really get you into a (good) froth and why?