The “body interaction”(BI) is a “vibrator development board” for building vibrating devices. It consist of a printed circuit board (PCB) with a vibration motor, an accelerometer, a LiPo battery and battery charger and wireless radio frequency (RF) communication. The board can be programmed with the Arduino IDE.
It looks like a very small Arduino compatable board that you cast, allowing you to Print and then cast your own 😀
They have a put a number of 3D printer models on Thingiverse