I have not purchased one from Mouser, but I can tell you what came in my box (I am an Intel employee and received one internally).
It came with the Galileo board, 4 plastic stand-offs (with screws), a 5 Volt 2 Amp power supply, a micro USB cable, and a circuit that plays the Intel bong whenever the light level increases. I did not get a doll in mine, but I believe the one I received is the standard retail box.
You will definitely get the power supply (don't operate without it plugged in) and the USB cable and most likely the plastic standoffs. That is really all that is needed.