DOTKey - 21st century typing for 21st century devices
Aqua's KeyTest - The program lets you check to see if all keys on your board function properly
Logitech Bluetooth Multi-Device Keyboard K480 - Whilst the keyboard functionality itself is quite basic, the ease with which you can switch between devices, and the added cradle for supporting tablet and/or phone make this a useful keyboard for anyone wanting one keyboard to rule them all.
keyview - If you're not sure what the scan code is for the key(s) you are interested in remapping, fetch...
Parrot Bepop Drone - Drone + Tablet + Oculus Rift --> magical combination
Keyboard Checker - Simple browser tool to check if all your keys work properly