All these items are compatible with the Arduino and perfect for your Arduino-based projects!
The DFPlayer Mini is a small and low cost MP3 module with an simplified output directly to the speaker. The module can be used as a stand alone module with attached battery, speaker and push buttons or used in combination with an Arduino UNO or any other with RX/TX capabilities.
This 9 Degree of Freedom Accelerometer, Gyro and Magnetometer Breakout Board contains the powerful MPU-9250 which combines a 3 axis gyro, 3 axis accelerometer and 3 axis magnetometer to detect motion with just one module! Raspberry Pi and Arduino compatible!