One of the simplest gadgets ever is also one of my favorites. I’m talking about Griffin’s original AirCurve, the acoustically-shaped amplifier that docks and increases the iPod/iPhone’s volume. It’s now been updated for iPhone 4s, increasing music 10dB louder.
https://gizmodo.com/griffin-aircurve-dock-amplifies-your-iphone-speakers-wi-5053109
Working specifically with iPhone 4s, it no longer sits the iPhone in the docked position, instead just resting it neatly inside (with a rubber area underneath to protect it). There’s also now a metal kickstand for holding it either vertically or horizontally, and luckily the price hasn’t changed either—it’s $20. [Griffin via GearLog via OhGizmo]
