Any batteries that read less than 1.2V, discard for recycling. Any that read between 1.2V and 1.4V are partly charged and great for use in a small clock or other small-power device. Any batteries that read above 1.4V are fully charged and can be used in nearly anything for a decent while.
The really tricky part—listen closely—is keeping them organized like this. Lifehacker's reader suggests using double-stick tape to keep the batteries stuck to a labeled card. Or you could go the lazy route and stick 'em in sandwich baggies inked with permanent marker.
Before you know it, you'll be saving money on batteries and—bonus!—you'll get your junk drawer back. For more important things. Like nightlights, rubberbands and take-out menus.