I myself love watches and you can never go wrong with having a Casio G-SHOCK hanging around. If you can't go for the diamond encrusted ones like Pharrell has:
You can always go for the classics like all white like mine:
Prices range from $69.50 up to $1,000's Check them out here
Comes in three colors, red brown and black, the red one is tight, the brown sucks, but the black is the best. I'll post personal pics of mine. It's amazinggggg. Get the bag here