wel the glove box would be the first spot I would say right off hand. as you can hide it when it's closed and have it out of the way but not really necessary when you are going to be able to detach the face.
You might be able to put it in the dash somewhere but alot of time you have to remove the airbag or loose something to install it into the dash.
Hope this might help a bit...good luck and be sure to share w/ us some pics of where you put it..
