As we've been living out of boxes, I've gained an appreciation for one of the cheap watches that came readily to hand: my Casio MRW200H Dive watch.
It's so light that you barely realize you are wearing it. You can even sleep whole wearing this watch. But, it's tough and offers good 100-meter water resistance, too. For only $25 or so, it is hard to beat.
If you need a decent bang around watch, you can't go wrong with a Casio MRW200H! You can read my complete review of this watch here. If you'd like to buy a watch like this, Amazon has plenty of varieties here.