SparkFun MPU-9250 IMU Breakout is smaller with efficient power consumption and combines two chips.
Grove - 3-Axis High G Digital Accelerometer(±400g) iu used to sense the 3 axis movement
HMC5883L 3-axis is a digital compass that can interface with the Arduino.
MPU-6050 is a combination of 3 axis accelerometer and 3 axis gyro with a total of 6 Dof.
FLORA Sensor Pack is a pack of wearable sensors for your projects
FLORA Accelerometer/Compass Sensor - LSM303 is a wearable component for your project
RedBot Sensor - Accelerometer helps in detection of motion
IMU Digital Combo Board offers you full 6 degrees of freedom.
LilyPad Accelerometer ADXL335 is a wearble accelerometer from Lilypad.