Netsplit is awesome. It fits in your pocket. You don't have to care about power. Plug it and get access to the network and its secrets
The Skunk switch is a fantastic device with the ability of bypassing NAC silently, it fits both Red Team operation and Penetration tests. Its configuration takes a few steps, allowing you to focus on the real assessment and the actual fun. I highly recommend to add a Skunk switch to your Red Team/Pentest arsenal.
Azban opens up new possibilities for exploitation, especially getting an initial foothold, without having to think about keyboard layout or OS. It's pretty amazing :)