Deauther Watch
Hacked together by DSTIKE & Spacehuhn, I'm sure glad this watch didn't exist when I was a kid. The lack of executive functioning in the underdeveloped prefrontal cortices of my peers & myself likely would have resulted in a trip or two to the principal's office—provided the staff in the IT department were savvy enough to catch on. Packet sniff, run deauth attacks, & Rick Roll available Wi-Fi networks, all from your wrist. It even has a built in flashlight.
Image credit DSTIKE