My Final Project was to create a device to attached to the bottom of aluminum can that can be used as a controller for a instillation. Each can attached is powered by a Adafruit Trinket Pro that uses bluetooth to connect with open frameworks. I am using a gyro/accel/mag and temperature chip to gather the data with the addition of a vibration motor to provide haptic feedback. I custom design and 3d printed the attachment to conceal the hardware and easily snap on the bottom of the can. When the attachment is clipped on the can it turns the device on and will be indicated by the onboard LED. The LED also allows you to orient your can the sensor chip inside the housing.
Video of device working[vimeo https://vimeo.com/114594187]