My Teensy LC arrived yesterday, and even just printing "hello world" on another computer, gave me vibes.
Anxious to get some pwning kicked off soon.
While waiting for my teensy, I did some research and found that next to the renowned Samy Kamkar , Nikhil SamratAshok Mittal did some great work with it.
He wrote Kautilya, a Ruby based program for HID, which has a various amount of payloads you can choose from, and tweak to your needs in the menu.
A how-to here is really not necessary, as he did it himself in the github link. I just found his work worth sharing.