Review on CHENYANG Ultra Mini DM Micro USB 5pin OTG Adapter Connector for Cell Phone Tablet, USB Cable, and Flash Disk - Pack of 5 by Gary Generale

These items are surprisingly durable and pretty cool. Plug one into any standard USB connector and one dart - it plugs into your phone (unless it's an Apple phone). I didn't even know you could use a mouse on an Android device, I was really surprised to see a cursor on my phone's screen when I connected (of all things) an Apple Magic Mouse to my Samsung phone. It'll be great for gaming on the go with some of my favorite USB controllers. Oh, and let's be honest for a moment - how can you go wrong at this price point? They're inexpensive, stronger than they look, and will likely outlast whatever equipment you put them in. At twice the price it becomes a bargain.