The InvenSense MPU-6050 sensor contains an accelerometer and a gyroscope in a single chip. It is very accurate, this sensor is used in self balancing robots, drones, smartphones, etc. The sensor uses the I2C-bus to interface with microcontroller.
Programmable RC Vectoring Mobile Desk with 4 inch Mecanum Wheels. The mobile desk can drive in any direction and roll in under a bed allowing you to use your laptop with a secondary monitor while in bed.