Recommendation for really small project parts

Hey guys,

I am working on a project that incorporates the use of an IMU (6 Degrees of Freedom IMU Digital Combo Board - ITG3200/ADXL345) and wireless transmission of the data using a chip Xbee Series 1. I am also using the Lillypad Arduino microprocessor and Lillypad Xbee.

The IMU is already quite small, but it seems pointless to have such a small IMU if the other pieces are so large. Does anyone know of a smaller wireless transmitter than the Xbee and Lillypad Xbee? A type of data storage system would also be just as effective. I was hoping to find something smaller than a quarter.


Perhaps something like this?

What about one of these little boards that contain an Atmega 328, a Cypress 2.4GHz transceiver and a H-bridge. I have used them in radio control for N Gauge model trains. They are not cheap, but they are very small.