Screenshot from eagle:
From the left: Rfduino, CC2500, and a Polulu 5v to 3.3v converter. Used a 40 maH lipo which fits on the top right. I realized after the fact that I could make life easier on myself, and have dedicated pads for the lipo, that aren't so close too each other. As it is, the lipo is directly soldered to the pin-header socket.
Completed device, in 3d printed ABS case.
It's almost bic lighter size.
A shot of the board, Dexcom for scale :)
And in it's charger base.