Wireless ADXL335?

Hello to all!
I am new to the wonderful world of Arduino. I have recreated this airdrumming project and it works like a charm. Really amazing!

Now I want to customize it a bit and transmit the data wireless from the drumsticks with the ADXL335 Gyros to the Arduino.
What is the best way to achieve this? Via RF Transmitter? I haven´t found any that could transmit on different frequencies. Ideally I would need to wirelessly transmit the data of 4 to 5 sensors. Bluetooth?
Thanks for your help!
Joe

Take a look at the RF24L01 2.4 GHz radios. 1 "master" can receive from up to 6 transmitters.

/Nrf24L01-2.4GHz-HowTo