X box live accounts
 

Is it possible for me to have my xbox live account on 2 xbox 360 :) want to get another one for when i'm not at home :D

Don't see why not, as long as the other 360 isn't being used at the same time :)

Keep it on a memory card. It will save you having to recover it each time.

Indeed I used to do this with my olde xbox

Another idea - why not swap your HDD from machine to machine? At least then you'd have all your current game saves on whichever console you were on.