My favorite? The Anker Powerline ($14).
1. YEP! IT'S LONG!
Yes, I did tape a power strip to the wall to illustrate a point.
2. Friends will love you.
3. It can reach behind difficult places or get you out of tricky ones.
4. No "power guilt".
5. I can roll around in bed (or the floor) and still be charging.
You can buy the Anker Powerline Lightning cable ($14) or the Powerline+ Micro USB cable ($11). If you don't mind the color red and paying a few more bucks, they offer a more rugged version for Apple devices. Powerline+ Lightning cable ($17).
They come in 6-foot versions as well if 10 is just *too* intimidating.